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/20170304-DifficultPathPrograms/down.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:45:11,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:45:11,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:45:11,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:45:11,726 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:45:11,728 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:45:11,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:45:11,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:45:11,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:45:11,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:45:11,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:45:11,782 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:45:11,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:45:11,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:45:11,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:45:11,799 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:45:11,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:45:11,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:45:11,800 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:45:11,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:45:11,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:45:11,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:45:11,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:45:11,904 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:45:11,905 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:45:11,905 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/down.i_4.bpl [2018-07-25 08:45:11,906 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/down.i_4.bpl' [2018-07-25 08:45:11,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:45:11,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:45:11,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:45:11,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:45:11,971 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:45:11,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:45:12,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:45:12,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:45:12,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:45:12,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:45:12,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:45:12,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:45:12,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:45:12,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/1) ... [2018-07-25 08:45:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:45:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:45:12,246 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:45:12,247 INFO L202 PluginConnector]: Adding new model down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:45:12 BoogieIcfgContainer [2018-07-25 08:45:12,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:45:12,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:45:12,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:45:12,252 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:45:12,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:11" (1/2) ... [2018-07-25 08:45:12,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bff3505 and model type down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:45:12, skipping insertion in model container [2018-07-25 08:45:12,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:45:12" (2/2) ... [2018-07-25 08:45:12,256 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bpl [2018-07-25 08:45:12,267 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:45:12,274 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:45:12,316 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:45:12,317 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:45:12,318 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:45:12,318 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:45:12,318 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:45:12,318 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:45:12,318 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:45:12,319 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:45:12,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:45:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:45:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:45:12,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,343 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:45:12,344 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,350 INFO L82 PathProgramCache]: Analyzing trace with hash 889539593, now seen corresponding path program 1 times [2018-07-25 08:45:12,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,432 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 08:45:12,434 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:45:12,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:45:12,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:45:12,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:45:12,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:45:12,455 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 08:45:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,510 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-07-25 08:45:12,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:45:12,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:45:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,523 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:45:12,523 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:45:12,527 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 08:45:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:45:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:45:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:45:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:45:12,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:45:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,565 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:45:12,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:45:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:45:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:45:12,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,567 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:45:12,567 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash 198622019, now seen corresponding path program 1 times [2018-07-25 08:45:12,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,602 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:45:12,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:45:12,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:45:12,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:45:12,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:45:12,606 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 08:45:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,659 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 08:45:12,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:45:12,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:45:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,661 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:45:12,661 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:45:12,662 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 08:45:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:45:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-07-25 08:45:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:45:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:45:12,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:45:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,667 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:45:12,668 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:45:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:45:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:45:12,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,669 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:45:12,669 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1897132479, now seen corresponding path program 1 times [2018-07-25 08:45:12,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:45:12,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:45:12,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:45:12,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:45:12,708 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 08:45:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,755 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 08:45:12,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:45:12,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:45:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,758 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:45:12,758 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:45:12,759 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 08:45:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:45:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:45:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:45:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:45:12,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:45:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,764 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:45:12,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:45:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:45:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:45:12,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,766 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:45:12,766 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1765329927, now seen corresponding path program 2 times [2018-07-25 08:45:12,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:45:12,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:45:12,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:45:12,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:45:12,835 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 08:45:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,962 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:45:12,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:45:12,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:45:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,964 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:45:12,964 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:45:12,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:45:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:45:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 08:45:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:45:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:45:12,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:45:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,974 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:45:12,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:45:12,974 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:45:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:45:12,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,975 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:45:12,975 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash 29955317, now seen corresponding path program 3 times [2018-07-25 08:45:12,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,014 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 08:45:13,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:45:13,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:45:13,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:45:13,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:45:13,016 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 08:45:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,074 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 08:45:13,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:45:13,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:45:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,075 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:45:13,076 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:45:13,076 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 08:45:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:45:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:45:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:45:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:45:13,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 08:45:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,083 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:45:13,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:45:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:45:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:45:13,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,085 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 08:45:13,085 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1153652177, now seen corresponding path program 4 times [2018-07-25 08:45:13,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,155 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 08:45:13,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:45:13,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:45:13,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:45:13,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:45:13,158 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 08:45:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,241 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 08:45:13,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:45:13,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:45:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,244 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:45:13,244 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:45:13,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:45:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:45:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-07-25 08:45:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:45:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:45:13,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 08:45:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,258 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:45:13,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:45:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:45:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:45:13,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,260 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:45:13,260 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash -558246485, now seen corresponding path program 5 times [2018-07-25 08:45:13,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:45:13,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:45:13,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:45:13,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:45:13,310 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 08:45:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,413 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 08:45:13,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:45:13,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:45:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,419 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:45:13,419 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:45:13,420 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 08:45:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:45:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:45:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:45:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:45:13,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:45:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,438 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:45:13,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:45:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:45:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:45:13,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,441 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 08:45:13,442 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,442 INFO L82 PathProgramCache]: Analyzing trace with hash -578011675, now seen corresponding path program 6 times [2018-07-25 08:45:13,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:45:13,496 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:45:13,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:45:13,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:45:13,497 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 08:45:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,557 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 08:45:13,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:45:13,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 08:45:13,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,558 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:45:13,558 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:45:13,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:45:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:45:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-07-25 08:45:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:45:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:45:13,571 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 08:45:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,572 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:45:13,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:45:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:45:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:45:13,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,574 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:45:13,574 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1418505247, now seen corresponding path program 7 times [2018-07-25 08:45:13,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:45:13,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:45:13,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:45:13,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:45:13,617 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 08:45:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,675 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 08:45:13,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:45:13,675 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:45:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,676 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:45:13,676 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:45:13,677 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 08:45:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:45:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:45:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:45:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:45:13,684 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 08:45:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,685 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:45:13,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:45:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:45:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:45:13,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,687 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 08:45:13,687 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1375531237, now seen corresponding path program 8 times [2018-07-25 08:45:13,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:45:13,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:45:13,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:45:13,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:45:13,754 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-07-25 08:45:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,846 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:45:13,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:45:13,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-25 08:45:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,848 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:45:13,848 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:45:13,849 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:45:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:45:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 08:45:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:45:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:45:13,856 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:45:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,857 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:45:13,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:45:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:45:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:45:13,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,858 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:45:13,859 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 964341655, now seen corresponding path program 9 times [2018-07-25 08:45:13,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:45:13,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:45:13,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:45:13,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:45:13,899 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 08:45:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,961 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 08:45:13,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:45:13,961 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:45:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,962 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:45:13,962 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:45:13,963 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 08:45:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:45:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:45:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:45:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:45:13,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 08:45:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,972 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:45:13,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:45:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:45:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:45:13,973 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,974 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 08:45:13,974 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1427751471, now seen corresponding path program 10 times [2018-07-25 08:45:13,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:45:14,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:45:14,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:45:14,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:45:14,029 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 08:45:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,091 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 08:45:14,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:45:14,092 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 08:45:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,093 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:45:14,093 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:45:14,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:45:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:45:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-25 08:45:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:45:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:45:14,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 08:45:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,111 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:45:14,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:45:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:45:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:45:14,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,114 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:45:14,114 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1974662963, now seen corresponding path program 11 times [2018-07-25 08:45:14,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:45:14,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:45:14,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:45:14,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:45:14,184 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 08:45:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,257 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 08:45:14,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:45:14,258 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:45:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,259 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:45:14,259 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:45:14,260 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 08:45:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:45:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:45:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:45:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:45:14,268 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:45:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,269 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:45:14,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:45:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:45:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:45:14,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,270 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 08:45:14,271 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash 577956359, now seen corresponding path program 12 times [2018-07-25 08:45:14,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:45:14,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:45:14,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:45:14,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:45:14,325 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-07-25 08:45:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,417 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 08:45:14,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:45:14,418 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-07-25 08:45:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,419 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:45:14,419 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:45:14,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:45:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:45:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-07-25 08:45:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:45:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:45:14,437 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 08:45:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,437 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:45:14,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:45:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:45:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:45:14,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,439 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:45:14,439 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1365213059, now seen corresponding path program 13 times [2018-07-25 08:45:14,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:45:14,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:45:14,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:45:14,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:45:14,520 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 08:45:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,624 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 08:45:14,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:45:14,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:45:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,626 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:45:14,626 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:45:14,630 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 08:45:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:45:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:45:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:45:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:45:14,646 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 08:45:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,647 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:45:14,647 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:45:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:45:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:45:14,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,650 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 08:45:14,650 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1260506179, now seen corresponding path program 14 times [2018-07-25 08:45:14,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:45:14,717 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:45:14,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:45:14,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:45:14,718 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 08:45:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,798 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:45:14,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:45:14,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 08:45:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,800 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:45:14,800 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:45:14,802 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:45:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:45:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 08:45:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:45:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:45:14,813 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:45:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,813 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:45:14,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:45:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:45:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:45:14,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,815 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:45:14,815 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,815 INFO L82 PathProgramCache]: Analyzing trace with hash -165727303, now seen corresponding path program 15 times [2018-07-25 08:45:14,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:45:14,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:45:14,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:45:14,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:45:14,904 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 08:45:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,008 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 08:45:15,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:45:15,009 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:45:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,009 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:45:15,009 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:45:15,010 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 08:45:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:45:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:45:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:45:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:45:15,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 08:45:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,020 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:45:15,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:45:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:45:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:45:15,024 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,024 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 08:45:15,024 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1448426227, now seen corresponding path program 16 times [2018-07-25 08:45:15,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:45:15,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:45:15,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:45:15,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:45:15,098 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 14 states. [2018-07-25 08:45:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,180 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 08:45:15,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:45:15,181 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-07-25 08:45:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,182 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:45:15,182 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:45:15,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:45:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:45:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-07-25 08:45:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:45:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:45:15,200 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 08:45:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,200 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:45:15,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:45:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:45:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:45:15,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,202 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:45:15,202 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash 368133487, now seen corresponding path program 17 times [2018-07-25 08:45:15,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,287 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:45:15,288 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:45:15,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:45:15,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:45:15,289 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 08:45:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,409 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 08:45:15,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:45:15,410 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:45:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,411 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:45:15,411 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:45:15,412 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 08:45:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:45:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:45:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:45:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:45:15,427 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:45:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,430 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:45:15,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:45:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:45:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:45:15,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,431 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 08:45:15,431 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash -788717655, now seen corresponding path program 18 times [2018-07-25 08:45:15,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:45:15,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:45:15,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:45:15,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:45:15,509 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 08:45:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,576 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 08:45:15,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:45:15,576 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 08:45:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,577 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:45:15,577 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:45:15,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:45:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:45:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-07-25 08:45:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:45:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:45:15,592 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 08:45:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,593 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:45:15,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:45:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:45:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:45:15,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,594 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:45:15,594 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2043489115, now seen corresponding path program 19 times [2018-07-25 08:45:15,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:45:15,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:45:15,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:45:15,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:45:15,690 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 08:45:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,778 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 08:45:15,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:45:15,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:45:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,779 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:45:15,780 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:45:15,781 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 08:45:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:45:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:45:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:45:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:45:15,791 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 08:45:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,792 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:45:15,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:45:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:45:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:45:15,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,793 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 08:45:15,793 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,794 INFO L82 PathProgramCache]: Analyzing trace with hash -957152801, now seen corresponding path program 20 times [2018-07-25 08:45:15,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:45:15,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:45:15,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:45:15,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:45:15,859 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-07-25 08:45:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,939 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:45:15,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:45:15,939 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-07-25 08:45:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,940 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:45:15,940 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:45:15,944 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:45:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:45:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 08:45:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:45:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:45:15,963 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:45:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,963 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:45:15,963 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:45:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:45:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:45:15,964 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,969 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:45:15,970 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,970 INFO L82 PathProgramCache]: Analyzing trace with hash -700907173, now seen corresponding path program 21 times [2018-07-25 08:45:15,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:45:16,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:45:16,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:45:16,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:45:16,061 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 08:45:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,189 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 08:45:16,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:45:16,189 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:45:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,190 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:45:16,190 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:45:16,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:45:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:45:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:45:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:45:16,204 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 08:45:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,205 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:45:16,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:45:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:45:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:45:16,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,206 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 08:45:16,208 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash 877396373, now seen corresponding path program 22 times [2018-07-25 08:45:16,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:45:16,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:45:16,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:45:16,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:45:16,286 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 08:45:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,382 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 08:45:16,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:45:16,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 08:45:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,383 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:45:16,383 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:45:16,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:45:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:45:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-07-25 08:45:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:45:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:45:16,396 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 08:45:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,397 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:45:16,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:45:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:45:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:45:16,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,398 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:45:16,398 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1364257681, now seen corresponding path program 23 times [2018-07-25 08:45:16,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:45:16,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:45:16,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:45:16,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:45:16,552 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 08:45:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,737 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 08:45:16,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:45:16,738 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:45:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,738 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:45:16,738 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:45:16,741 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 08:45:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:45:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:45:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:45:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:45:16,753 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:45:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,753 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:45:16,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:45:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:45:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:45:16,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,754 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 08:45:16,754 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1897217739, now seen corresponding path program 24 times [2018-07-25 08:45:16,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:45:16,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:45:16,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:45:16,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:45:16,837 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 18 states. [2018-07-25 08:45:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,915 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 08:45:16,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:45:16,916 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-07-25 08:45:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,917 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:45:16,917 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:45:16,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:45:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:45:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-07-25 08:45:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:45:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:45:16,930 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 08:45:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,930 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:45:16,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:45:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:45:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:45:16,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,931 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:45:16,931 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2134920377, now seen corresponding path program 25 times [2018-07-25 08:45:16,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:45:17,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:45:17,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:45:17,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:45:17,028 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 08:45:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,176 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 08:45:17,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:45:17,176 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:45:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,177 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:45:17,177 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:45:17,178 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 08:45:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:45:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:45:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:45:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:45:17,192 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 08:45:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,193 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:45:17,193 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:45:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:45:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:45:17,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,193 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 08:45:17,194 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1286350463, now seen corresponding path program 26 times [2018-07-25 08:45:17,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:45:17,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:45:17,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:45:17,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:45:17,267 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 08:45:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,349 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:45:17,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:45:17,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 08:45:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,350 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:45:17,351 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:45:17,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:45:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 08:45:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:45:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:45:17,364 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:45:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,365 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:45:17,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:45:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:45:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:45:17,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,366 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:45:17,366 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash 767719549, now seen corresponding path program 27 times [2018-07-25 08:45:17,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:45:17,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:45:17,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:45:17,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:45:17,468 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 08:45:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,624 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 08:45:17,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:45:17,625 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:45:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,625 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:45:17,626 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:45:17,627 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 08:45:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:45:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:45:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:45:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:45:17,641 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 08:45:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,642 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:45:17,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:45:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:45:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:45:17,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,643 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 08:45:17,643 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 285536695, now seen corresponding path program 28 times [2018-07-25 08:45:17,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:45:17,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:45:17,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:45:17,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:45:17,730 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 20 states. [2018-07-25 08:45:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,815 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 08:45:17,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:45:17,815 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-07-25 08:45:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,816 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:45:17,816 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:45:17,817 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:17,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:45:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-07-25 08:45:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:45:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:45:17,831 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 08:45:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,832 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:45:17,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:45:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:45:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:45:17,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,833 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:45:17,833 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,833 INFO L82 PathProgramCache]: Analyzing trace with hash -477209805, now seen corresponding path program 29 times [2018-07-25 08:45:17,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:45:17,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:45:17,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:45:17,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:17,951 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 08:45:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,137 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 08:45:18,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:45:18,138 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:45:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,138 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:45:18,138 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:45:18,141 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 08:45:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:45:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:45:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:45:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:45:18,157 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:45:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,157 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:45:18,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:45:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:45:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:45:18,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,158 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 08:45:18,159 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash 35497837, now seen corresponding path program 30 times [2018-07-25 08:45:18,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,245 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:45:18,245 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:45:18,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:45:18,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:45:18,246 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 08:45:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,349 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 08:45:18,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:45:18,349 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 08:45:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,350 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:45:18,350 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:45:18,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:45:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-07-25 08:45:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:45:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:45:18,373 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 08:45:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,373 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:45:18,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:45:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:45:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:45:18,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,374 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:45:18,374 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,374 INFO L82 PathProgramCache]: Analyzing trace with hash -246383767, now seen corresponding path program 31 times [2018-07-25 08:45:18,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:45:18,487 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:45:18,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:45:18,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:18,491 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 08:45:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,692 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 08:45:18,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:45:18,693 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:45:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,694 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:45:18,694 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:45:18,696 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 08:45:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:45:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:45:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:45:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:45:18,713 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 08:45:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,713 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:45:18,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:45:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:45:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:45:18,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,714 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 08:45:18,716 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1653283491, now seen corresponding path program 32 times [2018-07-25 08:45:18,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:45:18,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:45:18,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:45:18,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:45:18,811 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 22 states. [2018-07-25 08:45:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,911 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:45:18,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:45:18,911 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2018-07-25 08:45:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,912 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:45:18,912 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:45:18,913 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:45:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 08:45:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:45:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:45:18,933 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:45:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,933 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:45:18,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:45:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:45:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:45:18,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,934 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:45:18,935 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash -332531425, now seen corresponding path program 33 times [2018-07-25 08:45:18,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,079 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:45:19,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:45:19,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:45:19,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:19,081 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 08:45:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:19,337 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 08:45:19,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:45:19,337 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:45:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:19,338 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:45:19,339 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:45:19,343 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 08:45:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:45:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:45:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:45:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:45:19,366 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 08:45:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:19,366 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:45:19,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:45:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:45:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:45:19,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:19,368 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 08:45:19,368 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:19,368 INFO L82 PathProgramCache]: Analyzing trace with hash -198022311, now seen corresponding path program 34 times [2018-07-25 08:45:19,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:45:19,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:45:19,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:45:19,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:45:19,522 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 08:45:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:19,725 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 08:45:19,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:45:19,725 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 08:45:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:19,726 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:45:19,726 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:45:19,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:45:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-07-25 08:45:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:45:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:45:19,755 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 08:45:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:19,755 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:45:19,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:45:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:45:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:45:19,756 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:19,756 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:45:19,757 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:19,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1320946603, now seen corresponding path program 35 times [2018-07-25 08:45:19,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:45:19,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:45:19,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:45:19,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:19,931 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 08:45:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,163 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 08:45:20,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:45:20,164 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:45:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,164 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:45:20,165 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:45:20,167 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 08:45:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:45:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:45:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:45:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:45:20,188 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:45:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,188 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:45:20,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:45:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:45:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:45:20,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,190 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 08:45:20,190 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1626388879, now seen corresponding path program 36 times [2018-07-25 08:45:20,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:45:20,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:45:20,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:45:20,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:45:20,287 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2018-07-25 08:45:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,396 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 08:45:20,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:45:20,396 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2018-07-25 08:45:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,397 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:45:20,397 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:45:20,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:45:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-07-25 08:45:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:45:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:45:20,418 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 08:45:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,419 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:45:20,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:45:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:45:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:45:20,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,420 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:45:20,420 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,420 INFO L82 PathProgramCache]: Analyzing trace with hash -408449781, now seen corresponding path program 37 times [2018-07-25 08:45:20,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:45:20,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:45:20,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:45:20,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:20,561 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 08:45:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,819 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 08:45:20,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:45:20,820 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:45:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,821 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:45:20,821 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:45:20,823 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 08:45:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:45:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:45:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:45:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:45:20,845 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 08:45:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,845 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:45:20,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:45:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:45:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:45:20,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,847 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 08:45:20,847 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1130683067, now seen corresponding path program 38 times [2018-07-25 08:45:20,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:45:20,949 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:45:20,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:45:20,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:45:20,950 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 08:45:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:21,071 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:45:21,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:45:21,071 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 08:45:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:21,072 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:45:21,072 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:45:21,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:45:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:45:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 08:45:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:45:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:45:21,097 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:45:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:21,097 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:45:21,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:45:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:45:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:45:21,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:21,098 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:45:21,099 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash 40231745, now seen corresponding path program 39 times [2018-07-25 08:45:21,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:45:21,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:45:21,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:45:21,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:21,260 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 08:45:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:21,444 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 08:45:21,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:45:21,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:45:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:21,445 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:45:21,445 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:45:21,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:45:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:45:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:45:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:45:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:45:21,469 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 08:45:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:21,469 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:45:21,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:45:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:45:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:45:21,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:21,471 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 08:45:21,471 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:21,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2030121349, now seen corresponding path program 40 times [2018-07-25 08:45:21,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:45:21,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:45:21,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:45:21,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:45:21,581 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 26 states. [2018-07-25 08:45:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:21,710 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 08:45:21,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:45:21,711 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2018-07-25 08:45:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:21,712 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:45:21,712 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:45:21,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:45:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:45:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-07-25 08:45:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:45:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:45:21,737 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 08:45:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:21,737 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:45:21,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:45:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:45:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:45:21,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:21,739 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:45:21,739 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:21,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1031530761, now seen corresponding path program 41 times [2018-07-25 08:45:21,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:45:21,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:45:21,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:45:21,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:45:21,902 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 08:45:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,197 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 08:45:22,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:45:22,197 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:45:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,198 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:45:22,198 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:45:22,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:45:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:45:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:45:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:45:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:45:22,226 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:45:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,226 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:45:22,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:45:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:45:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:45:22,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,227 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 08:45:22,228 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 769709361, now seen corresponding path program 42 times [2018-07-25 08:45:22,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:45:22,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:45:22,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:45:22,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:45:22,361 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 08:45:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,510 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 08:45:22,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:45:22,510 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 08:45:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,511 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:45:22,511 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:45:22,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:45:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:45:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-07-25 08:45:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:45:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:45:22,543 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 08:45:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,543 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:45:22,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:45:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:45:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:45:22,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,545 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:45:22,545 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 956254253, now seen corresponding path program 43 times [2018-07-25 08:45:22,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:45:22,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:45:22,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:45:22,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:45:22,748 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 08:45:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,114 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 08:45:23,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:45:23,114 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:45:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,115 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:45:23,115 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:45:23,117 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 08:45:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:45:23,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:45:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:45:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:45:23,145 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 08:45:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,145 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:45:23,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:45:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:45:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:45:23,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,147 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 08:45:23,147 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,147 INFO L82 PathProgramCache]: Analyzing trace with hash 251550055, now seen corresponding path program 44 times [2018-07-25 08:45:23,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:23,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:45:23,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:45:23,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:45:23,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:45:23,267 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 28 states. [2018-07-25 08:45:23,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,399 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:45:23,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:45:23,399 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 96 [2018-07-25 08:45:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,400 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:45:23,400 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:45:23,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:45:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:45:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 08:45:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:45:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:45:23,427 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:45:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,427 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:45:23,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:45:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:45:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:45:23,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,429 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:45:23,429 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1221367523, now seen corresponding path program 45 times [2018-07-25 08:45:23,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:23,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:45:23,591 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:45:23,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:45:23,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:45:23,593 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 08:45:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,913 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 08:45:23,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:45:23,913 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:45:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,914 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:45:23,914 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:45:23,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1297, Invalid=4105, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:45:23,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:45:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:45:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:45:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:45:23,945 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 08:45:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,945 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:45:23,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:45:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:45:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:45:23,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,947 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 08:45:23,947 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,947 INFO L82 PathProgramCache]: Analyzing trace with hash -99845347, now seen corresponding path program 46 times [2018-07-25 08:45:23,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:45:24,067 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:45:24,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:45:24,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:45:24,068 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 08:45:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,210 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 08:45:24,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:45:24,210 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 08:45:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,211 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:45:24,211 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:45:24,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:45:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:45:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-07-25 08:45:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:45:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:45:24,244 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 08:45:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,244 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:45:24,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:45:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:45:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:45:24,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,246 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:45:24,246 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1462164711, now seen corresponding path program 47 times [2018-07-25 08:45:24,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:45:24,416 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:45:24,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:45:24,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:45:24,418 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 08:45:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,711 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 08:45:24,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:45:24,712 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:45:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,713 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:45:24,713 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:45:24,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:45:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:45:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:45:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:45:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:45:24,741 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:45:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,742 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:45:24,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:45:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:45:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:45:24,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,743 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 08:45:24,743 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash 850942547, now seen corresponding path program 48 times [2018-07-25 08:45:24,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:45:24,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:45:24,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:45:24,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:45:24,850 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 30 states. [2018-07-25 08:45:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,983 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 08:45:24,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:45:24,983 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2018-07-25 08:45:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,984 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:45:24,984 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:45:24,985 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:45:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:45:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-07-25 08:45:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:45:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:45:25,013 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 08:45:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,014 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:45:25,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:45:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:45:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:45:25,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,015 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:45:25,015 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1711934671, now seen corresponding path program 49 times [2018-07-25 08:45:25,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,171 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:45:25,172 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:45:25,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:45:25,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:45:25,173 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 08:45:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,468 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 08:45:25,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:45:25,468 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:45:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,469 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:45:25,469 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:45:25,471 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:45:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:45:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:45:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:45:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:45:25,501 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 08:45:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,502 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:45:25,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:45:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:45:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:45:25,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,503 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 08:45:25,503 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash -223930615, now seen corresponding path program 50 times [2018-07-25 08:45:25,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:45:25,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:45:25,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:45:25,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:45:25,659 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 08:45:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,813 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:45:25,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:45:25,813 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 08:45:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,814 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:45:25,814 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:45:25,816 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:45:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:45:25,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 08:45:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:45:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:45:25,854 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:45:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,857 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:45:25,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:45:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:45:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:45:25,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,859 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:45:25,859 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash -449022971, now seen corresponding path program 51 times [2018-07-25 08:45:25,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:45:26,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:45:26,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:45:26,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:45:26,070 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 08:45:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:26,473 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 08:45:26,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:45:26,473 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:45:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:26,474 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:45:26,474 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:45:26,475 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 08:45:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:45:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:45:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:45:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:45:26,505 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 08:45:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:26,506 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:45:26,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:45:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:45:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:45:26,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:26,507 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 08:45:26,508 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1802883391, now seen corresponding path program 52 times [2018-07-25 08:45:26,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:45:26,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:45:26,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:45:26,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:45:26,619 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 32 states. [2018-07-25 08:45:26,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:26,764 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 08:45:26,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:45:26,765 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2018-07-25 08:45:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:26,766 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:45:26,766 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:45:26,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:45:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:45:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-07-25 08:45:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:45:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:45:26,803 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 08:45:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:26,804 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:45:26,804 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:45:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:45:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:45:26,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:26,805 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:45:26,806 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:26,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1699051707, now seen corresponding path program 53 times [2018-07-25 08:45:26,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:45:26,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:45:26,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:45:26,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:45:26,978 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 08:45:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,291 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 08:45:27,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:45:27,291 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:45:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,292 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:45:27,292 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:45:27,293 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 08:45:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:45:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:45:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:45:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:45:27,324 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:45:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,325 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:45:27,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:45:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:45:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:45:27,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,326 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 08:45:27,326 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1220126965, now seen corresponding path program 54 times [2018-07-25 08:45:27,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:27,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:27,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:45:27,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:45:27,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:45:27,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:45:27,449 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 08:45:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,606 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 08:45:27,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:45:27,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 08:45:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,607 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:45:27,607 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:45:27,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:45:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:45:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-07-25 08:45:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:45:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:45:27,643 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 08:45:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,644 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:45:27,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:45:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:45:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:45:27,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,645 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:45:27,645 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,646 INFO L82 PathProgramCache]: Analyzing trace with hash 15874801, now seen corresponding path program 55 times [2018-07-25 08:45:27,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:27,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:27,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:45:27,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:45:27,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:45:27,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:45:27,836 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 08:45:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,174 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 08:45:28,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:45:28,175 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:45:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,176 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:45:28,176 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:45:28,177 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 08:45:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:45:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:45:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:45:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:45:28,213 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 08:45:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,213 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:45:28,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:45:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:45:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:45:28,215 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,215 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 08:45:28,215 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1308639701, now seen corresponding path program 56 times [2018-07-25 08:45:28,216 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:28,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:28,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:45:28,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:45:28,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:45:28,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:28,336 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 34 states. [2018-07-25 08:45:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,486 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:45:28,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:45:28,486 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 120 [2018-07-25 08:45:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,487 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:45:28,487 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:45:28,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:45:28,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:45:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 08:45:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:45:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:45:28,528 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:45:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,528 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:45:28,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:45:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:45:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:45:28,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,530 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:45:28,530 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 822598311, now seen corresponding path program 57 times [2018-07-25 08:45:28,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:28,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:28,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:45:28,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:45:28,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:45:28,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:45:28,712 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 08:45:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,130 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 08:45:29,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:45:29,130 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:45:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,131 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:45:29,132 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:45:29,133 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 08:45:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:45:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:45:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:45:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:45:29,166 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 08:45:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,166 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:45:29,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:45:29,166 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:45:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:45:29,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,167 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 08:45:29,167 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash -858967839, now seen corresponding path program 58 times [2018-07-25 08:45:29,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:29,339 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:45:29,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:45:29,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:45:29,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:45:29,340 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 08:45:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,494 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 08:45:29,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:45:29,494 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 08:45:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,496 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:45:29,496 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:45:29,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:45:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:45:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-07-25 08:45:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:45:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:45:29,539 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 08:45:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,540 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:45:29,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:45:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:45:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:45:29,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,541 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:45:29,542 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash -834439203, now seen corresponding path program 59 times [2018-07-25 08:45:29,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:29,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:45:29,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:45:29,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:45:29,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:45:29,732 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 08:45:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:30,095 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 08:45:30,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:45:30,095 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:45:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:30,097 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:45:30,097 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:45:30,099 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 08:45:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:45:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:45:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:45:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:45:30,142 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:45:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:30,143 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:45:30,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:45:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:45:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:45:30,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:30,144 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 08:45:30,145 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:30,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1096867561, now seen corresponding path program 60 times [2018-07-25 08:45:30,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:45:30,290 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:45:30,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:45:30,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:30,291 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 36 states. [2018-07-25 08:45:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:30,465 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 08:45:30,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:45:30,465 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 128 [2018-07-25 08:45:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:30,466 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:45:30,466 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:45:30,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:45:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:45:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-07-25 08:45:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:45:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:45:30,509 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 08:45:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:30,510 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:45:30,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:45:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:45:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:45:30,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:30,511 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:45:30,511 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1822805357, now seen corresponding path program 61 times [2018-07-25 08:45:30,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:45:30,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:45:30,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:45:30,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:45:30,714 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 08:45:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:31,093 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 08:45:31,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:45:31,094 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:45:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:31,095 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:45:31,095 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:45:31,096 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 08:45:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:45:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:45:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:45:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:45:31,138 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 08:45:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:31,139 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:45:31,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:45:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:45:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:45:31,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:31,142 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 08:45:31,143 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:31,143 INFO L82 PathProgramCache]: Analyzing trace with hash 787132109, now seen corresponding path program 62 times [2018-07-25 08:45:31,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:45:31,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:45:31,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:45:31,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:45:31,287 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 08:45:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:31,468 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:45:31,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:45:31,469 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 08:45:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:31,470 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:45:31,470 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:45:31,471 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:45:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:45:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 08:45:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:45:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:45:31,511 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:45:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:31,511 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:45:31,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:45:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:45:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:45:31,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:31,513 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:45:31,514 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash 519645897, now seen corresponding path program 63 times [2018-07-25 08:45:31,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:45:31,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:45:31,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:45:31,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:45:31,718 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 08:45:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,232 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 08:45:32,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:45:32,232 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:45:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,233 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:45:32,233 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:45:32,235 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 08:45:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:45:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:45:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:45:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:45:32,281 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 08:45:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,282 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:45:32,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:45:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:45:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:45:32,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,284 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 08:45:32,284 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1226635779, now seen corresponding path program 64 times [2018-07-25 08:45:32,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:32,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:32,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:45:32,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:45:32,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:45:32,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:32,460 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 38 states. [2018-07-25 08:45:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,660 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 08:45:32,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:45:32,660 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2018-07-25 08:45:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,662 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:45:32,662 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:45:32,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:45:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:45:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-07-25 08:45:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:45:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:45:32,713 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 08:45:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,713 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:45:32,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:45:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:45:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:45:32,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,715 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:45:32,716 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1975877759, now seen corresponding path program 65 times [2018-07-25 08:45:32,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:32,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:32,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:45:32,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:45:32,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:45:32,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:45:32,963 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 08:45:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:33,377 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 08:45:33,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:45:33,377 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:45:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:33,378 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:45:33,378 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:45:33,380 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 08:45:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:45:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:45:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:45:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:45:33,419 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:45:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:33,420 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:45:33,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:45:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:45:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:45:33,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:33,421 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 08:45:33,422 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1050354361, now seen corresponding path program 66 times [2018-07-25 08:45:33,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:45:33,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:45:33,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:45:33,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:45:33,555 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 08:45:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:33,715 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 08:45:33,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:45:33,715 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 08:45:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:33,718 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:45:33,719 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:45:33,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:45:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:45:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-07-25 08:45:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:45:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:45:33,760 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 08:45:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:33,761 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:45:33,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:45:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:45:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:45:33,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:33,763 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:45:33,764 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash 73159605, now seen corresponding path program 67 times [2018-07-25 08:45:33,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:45:33,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:45:33,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:45:33,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:45:33,969 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 08:45:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,414 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 08:45:34,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:45:34,414 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:45:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,415 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:45:34,415 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:45:34,417 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 08:45:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:45:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:45:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:45:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:45:34,462 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 08:45:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:34,462 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:45:34,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:45:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:45:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:45:34,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:34,464 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 08:45:34,464 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:34,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1220692207, now seen corresponding path program 68 times [2018-07-25 08:45:34,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:34,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:34,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:45:34,613 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:45:34,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:45:34,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:34,614 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 40 states. [2018-07-25 08:45:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,798 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:45:34,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:45:34,798 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2018-07-25 08:45:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,799 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:45:34,800 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:45:34,803 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:45:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:45:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 08:45:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:45:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:45:34,852 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:45:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:34,852 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:45:34,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:45:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:45:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:45:34,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:34,854 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:45:34,854 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:34,854 INFO L82 PathProgramCache]: Analyzing trace with hash 559072363, now seen corresponding path program 69 times [2018-07-25 08:45:34,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:35,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:35,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:45:35,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:45:35,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:45:35,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:45:35,092 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 08:45:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:35,667 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 08:45:35,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:45:35,667 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:45:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:35,669 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:45:35,669 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:45:35,671 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 08:45:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:45:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:45:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:45:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:45:35,723 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 08:45:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:35,723 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:45:35,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:45:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:45:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:45:35,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:35,725 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 08:45:35,726 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash 719817893, now seen corresponding path program 70 times [2018-07-25 08:45:35,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:35,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:35,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:45:35,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:45:35,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:45:35,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:45:35,892 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 08:45:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:36,140 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 08:45:36,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:45:36,140 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 08:45:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:36,142 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:45:36,143 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:45:36,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:45:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:45:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-07-25 08:45:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:45:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:45:36,195 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 08:45:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:36,196 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:45:36,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:45:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:45:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:45:36,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:36,197 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:45:36,198 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 255193761, now seen corresponding path program 71 times [2018-07-25 08:45:36,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:36,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:36,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:45:36,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:45:36,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:45:36,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:45:36,410 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 08:45:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:36,912 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 08:45:36,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:45:36,912 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:45:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:36,914 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:45:36,914 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:45:36,915 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 08:45:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:45:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:45:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:45:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:45:36,960 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:45:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:36,960 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:45:36,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:45:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:45:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:45:36,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:36,962 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 08:45:36,962 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:36,962 INFO L82 PathProgramCache]: Analyzing trace with hash 878185947, now seen corresponding path program 72 times [2018-07-25 08:45:36,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:37,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:37,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:45:37,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:45:37,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:45:37,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:37,110 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 42 states. [2018-07-25 08:45:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:37,307 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 08:45:37,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:45:37,307 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2018-07-25 08:45:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:37,309 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:45:37,309 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:45:37,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:45:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:45:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-07-25 08:45:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:45:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:45:37,356 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 08:45:37,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:37,357 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:45:37,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:45:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:45:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:45:37,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:37,358 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:45:37,358 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:37,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2123038295, now seen corresponding path program 73 times [2018-07-25 08:45:37,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:37,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:37,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:45:37,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:45:37,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:45:37,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:45:37,578 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 08:45:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:38,023 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 08:45:38,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:45:38,023 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:45:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:38,024 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:45:38,024 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:45:38,025 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 08:45:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:45:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:45:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:45:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:45:38,075 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 08:45:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:38,076 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:45:38,076 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:45:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:45:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:45:38,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:38,077 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 08:45:38,077 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1034359663, now seen corresponding path program 74 times [2018-07-25 08:45:38,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:45:38,218 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:45:38,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:45:38,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:45:38,219 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 08:45:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:38,377 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:45:38,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:45:38,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 08:45:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:38,379 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:45:38,379 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:45:38,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:45:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:45:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 08:45:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:45:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:45:38,429 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:45:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:38,430 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:45:38,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:45:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:45:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:45:38,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:38,431 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:45:38,431 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1882257523, now seen corresponding path program 75 times [2018-07-25 08:45:38,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:45:38,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:45:38,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:45:38,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:45:38,648 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 08:45:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,262 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 08:45:39,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:45:39,263 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:45:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,264 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:45:39,264 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:45:39,266 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 08:45:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:45:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:45:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:45:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:45:39,312 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 08:45:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,313 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:45:39,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:45:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:45:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:45:39,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,314 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 08:45:39,314 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1109870791, now seen corresponding path program 76 times [2018-07-25 08:45:39,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:39,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:39,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:45:39,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:45:39,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:45:39,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:39,545 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 44 states. [2018-07-25 08:45:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,808 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 08:45:39,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:45:39,808 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-07-25 08:45:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,810 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:45:39,810 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:45:39,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:45:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:45:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-07-25 08:45:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:45:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:45:39,867 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 08:45:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,868 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:45:39,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:45:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:45:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:45:39,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,869 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:45:39,869 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1433873987, now seen corresponding path program 77 times [2018-07-25 08:45:39,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:40,119 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:40,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:45:40,119 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:45:40,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:45:40,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:45:40,120 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 08:45:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:40,787 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 08:45:40,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:45:40,787 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:45:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:40,788 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:45:40,788 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:45:40,790 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 08:45:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:45:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:45:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:45:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:45:40,828 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:45:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:40,828 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:45:40,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:45:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:45:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:45:40,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:40,829 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 08:45:40,829 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:40,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1292352899, now seen corresponding path program 78 times [2018-07-25 08:45:40,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:40,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:40,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:45:40,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:45:40,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:45:40,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:45:40,986 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 08:45:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:41,200 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 08:45:41,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:45:41,200 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 08:45:41,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:41,201 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:45:41,201 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:45:41,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:45:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-07-25 08:45:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:45:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:45:41,260 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 08:45:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:41,261 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:45:41,261 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:45:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:45:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:45:41,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:41,262 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:45:41,262 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash -705654151, now seen corresponding path program 79 times [2018-07-25 08:45:41,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:41,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:41,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:45:41,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:45:41,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:45:41,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:45:41,502 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 08:45:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:42,181 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 08:45:42,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:45:42,181 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:45:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:42,182 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:45:42,182 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:45:42,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:45:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:45:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:45:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:45:42,231 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 08:45:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:42,232 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:45:42,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:45:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:45:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:45:42,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:42,233 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 08:45:42,233 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:42,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1476855373, now seen corresponding path program 80 times [2018-07-25 08:45:42,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:42,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:42,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:45:42,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:45:42,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:45:42,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:45:42,412 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 46 states. [2018-07-25 08:45:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:42,635 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:45:42,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:45:42,636 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 168 [2018-07-25 08:45:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:42,637 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:45:42,637 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:45:42,638 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:45:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 08:45:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:45:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:45:42,699 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:45:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:42,699 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:45:42,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:45:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:45:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:45:42,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:42,700 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:45:42,701 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:42,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1918872529, now seen corresponding path program 81 times [2018-07-25 08:45:42,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:42,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:42,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:45:42,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:45:42,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:45:42,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:42,933 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 08:45:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:43,442 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 08:45:43,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:45:43,442 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:45:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:43,443 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:45:43,443 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:45:43,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:45:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:45:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:45:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:45:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:45:43,485 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 08:45:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:43,485 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:45:43,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:45:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:45:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:45:43,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,486 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 08:45:43,486 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash -900821399, now seen corresponding path program 82 times [2018-07-25 08:45:43,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:43,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:43,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:45:43,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:45:43,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:45:43,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:45:43,658 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 08:45:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:43,807 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 08:45:43,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:45:43,808 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 08:45:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:43,809 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:45:43,809 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:45:43,809 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:45:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-07-25 08:45:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:45:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:45:43,852 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 08:45:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:43,852 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:45:43,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:45:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:45:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:45:43,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,854 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:45:43,854 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1893962597, now seen corresponding path program 83 times [2018-07-25 08:45:43,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:45:44,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:45:44,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:45:44,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:44,041 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 08:45:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,589 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 08:45:44,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:45:44,590 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:45:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,591 INFO L225 Difference]: With dead ends: 266 [2018-07-25 08:45:44,591 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:45:44,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:45:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:45:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:45:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:45:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:45:44,639 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:45:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,639 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:45:44,639 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:45:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:45:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:45:44,640 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,641 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 08:45:44,642 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash -619306849, now seen corresponding path program 84 times [2018-07-25 08:45:44,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:45:44,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:45:44,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:45:44,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:45:44,777 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 48 states. [2018-07-25 08:45:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,930 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 08:45:44,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:45:44,930 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 176 [2018-07-25 08:45:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,933 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:45:44,933 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:45:44,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:45:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-07-25 08:45:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:45:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:45:44,984 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 08:45:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,984 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:45:44,985 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:45:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:45:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:45:44,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,986 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:45:44,986 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1846505499, now seen corresponding path program 85 times [2018-07-25 08:45:44,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:45:45,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:45:45,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:45:45,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:45,208 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 08:45:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,809 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 08:45:45,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:45:45,809 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:45:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,810 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:45:45,810 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:45:45,812 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 08:45:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:45:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:45:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:45:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:45:45,860 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 08:45:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,860 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:45:45,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:45:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:45:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:45:45,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,861 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 08:45:45,861 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 895799381, now seen corresponding path program 86 times [2018-07-25 08:45:45,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:45:46,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:45:46,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:45:46,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:45:46,032 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 08:45:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,259 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:45:46,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:45:46,259 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 08:45:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,260 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:45:46,260 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:45:46,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:45:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 08:45:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:45:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:45:46,324 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:45:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,325 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:45:46,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:45:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:45:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:45:46,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,326 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:45:46,326 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1869679185, now seen corresponding path program 87 times [2018-07-25 08:45:46,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:45:46,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:45:46,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:45:46,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:46,589 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 08:45:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,198 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 08:45:47,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:45:47,198 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:45:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,200 INFO L225 Difference]: With dead ends: 278 [2018-07-25 08:45:47,200 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:45:47,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:45:47,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:45:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:45:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:45:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:45:47,265 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 08:45:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,266 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:45:47,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:45:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:45:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:45:47,267 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,267 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 08:45:47,267 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -800604789, now seen corresponding path program 88 times [2018-07-25 08:45:47,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:45:47,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:45:47,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:45:47,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:45:47,433 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 50 states. [2018-07-25 08:45:47,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,572 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 08:45:47,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:45:47,572 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 184 [2018-07-25 08:45:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,573 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:45:47,573 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:45:47,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:45:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-07-25 08:45:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:45:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:45:47,637 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 08:45:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,637 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:45:47,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:45:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:45:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:45:47,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,639 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:45:47,639 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,639 INFO L82 PathProgramCache]: Analyzing trace with hash -582123001, now seen corresponding path program 89 times [2018-07-25 08:45:47,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:45:47,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:45:47,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:45:47,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:47,846 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 08:45:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,390 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 08:45:48,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:45:48,390 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:45:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,391 INFO L225 Difference]: With dead ends: 284 [2018-07-25 08:45:48,391 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:45:48,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4509, Invalid=14951, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:45:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:45:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:45:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:45:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:45:48,438 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:45:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,438 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:45:48,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:45:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:45:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:45:48,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,439 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 08:45:48,439 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1060894655, now seen corresponding path program 90 times [2018-07-25 08:45:48,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:45:48,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:45:48,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:45:48,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:45:48,579 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 08:45:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,769 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 08:45:48,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:45:48,769 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 08:45:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,770 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:45:48,770 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:45:48,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:45:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-07-25 08:45:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:45:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:45:48,814 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 08:45:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,815 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:45:48,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:45:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:45:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:45:48,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,815 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:45:48,816 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1612581059, now seen corresponding path program 91 times [2018-07-25 08:45:48,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:45:49,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:45:49,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:45:49,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:49,012 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 08:45:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,658 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 08:45:49,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:45:49,658 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:45:49,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,659 INFO L225 Difference]: With dead ends: 290 [2018-07-25 08:45:49,659 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:45:49,660 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 08:45:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:45:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:45:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:45:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:45:49,710 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 08:45:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,710 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:45:49,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:45:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:45:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:45:49,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,711 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 08:45:49,712 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1003933815, now seen corresponding path program 92 times [2018-07-25 08:45:49,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:45:49,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:45:49,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:45:49,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:45:49,871 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-07-25 08:45:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:50,035 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:45:50,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:45:50,035 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-07-25 08:45:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:50,036 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:45:50,036 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:45:50,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:45:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 08:45:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:45:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:45:50,090 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:45:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:50,091 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:45:50,091 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:45:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:45:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:45:50,092 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:50,092 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:45:50,092 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1587312141, now seen corresponding path program 93 times [2018-07-25 08:45:50,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:45:50,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:45:50,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:45:50,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:50,347 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 08:45:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,030 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 08:45:51,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:45:51,030 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:45:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,031 INFO L225 Difference]: With dead ends: 296 [2018-07-25 08:45:51,031 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:45:51,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:45:51,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:45:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:45:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:45:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:45:51,083 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 08:45:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,083 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:45:51,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:45:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:45:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:45:51,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,084 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 08:45:51,084 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash 410334765, now seen corresponding path program 94 times [2018-07-25 08:45:51,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:51,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:51,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:45:51,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:45:51,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:45:51,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:45:51,252 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 08:45:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,422 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 08:45:51,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:45:51,422 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 08:45:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,423 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:45:51,423 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:45:51,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:45:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-07-25 08:45:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:45:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:45:51,489 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 08:45:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,489 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:45:51,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:45:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:45:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:45:51,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,490 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:45:51,490 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,491 INFO L82 PathProgramCache]: Analyzing trace with hash -805348823, now seen corresponding path program 95 times [2018-07-25 08:45:51,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:51,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:51,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:45:51,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:45:51,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:45:51,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:51,714 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 08:45:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,382 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 08:45:52,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:45:52,382 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:45:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,383 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:45:52,383 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:45:52,384 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 08:45:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:45:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:45:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:45:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:45:52,434 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:45:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,435 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:45:52,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:45:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:45:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:45:52,436 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,436 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 08:45:52,436 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash -779331229, now seen corresponding path program 96 times [2018-07-25 08:45:52,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:45:52,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:45:52,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:45:52,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:45:52,647 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 54 states. [2018-07-25 08:45:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,883 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 08:45:52,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:45:52,883 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 200 [2018-07-25 08:45:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,884 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:45:52,884 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:45:52,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:45:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-07-25 08:45:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:45:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:45:52,943 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 08:45:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,943 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:45:52,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:45:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:45:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:45:52,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,944 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:45:52,944 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1613068321, now seen corresponding path program 97 times [2018-07-25 08:45:52,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:45:53,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:45:53,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:45:53,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:53,157 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 08:45:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:53,801 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 08:45:53,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:45:53,801 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:45:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:53,802 INFO L225 Difference]: With dead ends: 308 [2018-07-25 08:45:53,802 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:45:53,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:45:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:45:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:45:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:45:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:45:53,852 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 08:45:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:53,852 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:45:53,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:45:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:45:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:45:53,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:53,853 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 08:45:53,854 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash 134306329, now seen corresponding path program 98 times [2018-07-25 08:45:53,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:45:53,996 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:45:53,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:45:53,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:45:53,997 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 08:45:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,157 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:45:54,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:45:54,157 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 08:45:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,158 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:45:54,158 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:45:54,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:45:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 08:45:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:45:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:45:54,218 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:45:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,218 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:45:54,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:45:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:45:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:45:54,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,219 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:45:54,219 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash 219296533, now seen corresponding path program 99 times [2018-07-25 08:45:54,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:54,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:54,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:45:54,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:45:54,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:45:54,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:54,438 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 08:45:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,855 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 08:45:54,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:45:54,855 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:45:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,856 INFO L225 Difference]: With dead ends: 314 [2018-07-25 08:45:54,856 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:45:54,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:45:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:45:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:45:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:45:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:45:54,911 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 08:45:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,912 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:45:54,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:45:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:45:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:45:54,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,913 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 08:45:54,913 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2068752305, now seen corresponding path program 100 times [2018-07-25 08:45:54,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:45:55,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:45:55,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:45:55,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:45:55,109 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 56 states. [2018-07-25 08:45:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,290 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 08:45:55,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:45:55,290 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 208 [2018-07-25 08:45:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,291 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:45:55,291 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:45:55,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:45:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-07-25 08:45:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:45:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:45:55,349 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 08:45:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,350 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:45:55,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:45:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:45:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:45:55,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,351 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:45:55,351 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash 498826187, now seen corresponding path program 101 times [2018-07-25 08:45:55,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:45:55,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:45:55,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:45:55,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:55,619 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 08:45:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:56,353 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 08:45:56,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:45:56,353 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:45:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:56,354 INFO L225 Difference]: With dead ends: 320 [2018-07-25 08:45:56,354 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:45:56,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:45:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:45:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:45:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:45:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:45:56,423 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:45:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:56,423 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:45:56,423 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:45:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:45:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:45:56,425 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:56,425 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 08:45:56,425 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1166969851, now seen corresponding path program 102 times [2018-07-25 08:45:56,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:56,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:56,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:45:56,644 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:45:56,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:45:56,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:45:56,645 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 08:45:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:56,856 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 08:45:56,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:45:56,856 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 08:45:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:56,857 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:45:56,857 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:45:56,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:45:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-07-25 08:45:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:45:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:45:56,920 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 08:45:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:56,920 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:45:56,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:45:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:45:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:45:56,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:56,921 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:45:56,921 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:56,922 INFO L82 PathProgramCache]: Analyzing trace with hash -471629311, now seen corresponding path program 103 times [2018-07-25 08:45:56,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:57,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:57,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:45:57,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:45:57,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:45:57,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:57,193 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 08:45:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,099 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 08:45:58,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:45:58,099 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:45:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,100 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:45:58,100 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:45:58,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:45:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:45:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:45:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:45:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:45:58,170 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 08:45:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,170 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:45:58,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:45:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:45:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:45:58,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,171 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 08:45:58,172 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash -938554053, now seen corresponding path program 104 times [2018-07-25 08:45:58,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:45:58,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:45:58,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:45:58,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:45:58,361 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 58 states. [2018-07-25 08:45:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,561 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:45:58,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:45:58,561 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 216 [2018-07-25 08:45:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,562 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:45:58,562 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:45:58,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:45:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:45:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 08:45:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:45:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:45:58,623 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:45:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,624 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:45:58,624 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:45:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:45:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:45:58,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,625 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:45:58,625 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash -7379529, now seen corresponding path program 105 times [2018-07-25 08:45:58,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:45:58,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:45:58,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:45:58,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:58,918 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 08:45:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:59,601 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 08:45:59,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:45:59,601 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:45:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:59,602 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:45:59,602 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:45:59,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:45:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:45:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:45:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:45:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:45:59,683 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 08:45:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:59,683 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:45:59,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:45:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:45:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:45:59,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:59,685 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 08:45:59,685 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash -95517711, now seen corresponding path program 106 times [2018-07-25 08:45:59,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:59,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:59,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:45:59,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:45:59,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:45:59,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:45:59,976 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 08:46:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:00,196 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 08:46:00,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:46:00,196 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 08:46:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:00,197 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:46:00,197 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:46:00,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:46:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:46:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-07-25 08:46:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:46:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:46:00,262 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 08:46:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:00,262 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:46:00,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:46:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:46:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:46:00,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:00,263 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:46:00,263 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1598273811, now seen corresponding path program 107 times [2018-07-25 08:46:00,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:00,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:00,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:46:00,557 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:46:00,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:46:00,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:46:00,558 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 08:46:01,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,234 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 08:46:01,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:46:01,234 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:46:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,235 INFO L225 Difference]: With dead ends: 338 [2018-07-25 08:46:01,235 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:46:01,237 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 08:46:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:46:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:46:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:46:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:46:01,300 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:46:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,300 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:46:01,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:46:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:46:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:46:01,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,301 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 08:46:01,301 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash -840058841, now seen corresponding path program 108 times [2018-07-25 08:46:01,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:01,485 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:46:01,485 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:46:01,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:46:01,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:46:01,486 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 60 states. [2018-07-25 08:46:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,691 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 08:46:01,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:46:01,691 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 224 [2018-07-25 08:46:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,692 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:46:01,692 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:46:01,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:46:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:46:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-07-25 08:46:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:46:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:46:01,763 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 08:46:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,763 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:46:01,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:46:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:46:01,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:46:01,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,764 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:46:01,764 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash 157238691, now seen corresponding path program 109 times [2018-07-25 08:46:01,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:02,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:02,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:46:02,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:46:02,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:46:02,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:46:02,079 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 08:46:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:02,553 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 08:46:02,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:46:02,553 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:46:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:02,554 INFO L225 Difference]: With dead ends: 344 [2018-07-25 08:46:02,554 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:46:02,556 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 08:46:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:46:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:46:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:46:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:46:02,622 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 08:46:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:02,623 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:46:02,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:46:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:46:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:46:02,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:02,624 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 08:46:02,624 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1906411997, now seen corresponding path program 110 times [2018-07-25 08:46:02,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:02,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:02,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:46:02,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:46:02,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:46:02,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:46:02,833 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 08:46:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:03,049 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 08:46:03,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:46:03,049 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 08:46:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:03,049 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:46:03,050 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:46:03,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:46:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:46:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 08:46:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:46:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:46:03,119 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:46:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:03,119 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:46:03,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:46:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:46:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:46:03,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:03,120 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:46:03,121 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1889173031, now seen corresponding path program 111 times [2018-07-25 08:46:03,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:03,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:03,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:46:03,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:46:03,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:46:03,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:46:03,494 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 08:46:04,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,137 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 08:46:04,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:46:04,137 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:46:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,137 INFO L225 Difference]: With dead ends: 350 [2018-07-25 08:46:04,137 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:46:04,139 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 08:46:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:46:04,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:46:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:46:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 08:46:04,199 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 08:46:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,199 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 08:46:04,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:46:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 08:46:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:46:04,200 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,200 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 08:46:04,200 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash -938010349, now seen corresponding path program 112 times [2018-07-25 08:46:04,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:04,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:04,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:46:04,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:46:04,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:46:04,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:46:04,474 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 62 states. [2018-07-25 08:46:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,731 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 08:46:04,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:46:04,731 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2018-07-25 08:46:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,731 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:46:04,731 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:46:04,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:46:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:46:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-07-25 08:46:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:46:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:46:04,800 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 08:46:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,800 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:46:04,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:46:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:46:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:46:04,801 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,801 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:46:04,801 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash 515120015, now seen corresponding path program 113 times [2018-07-25 08:46:04,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:05,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:05,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:46:05,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:46:05,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:46:05,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:46:05,093 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 08:46:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:05,855 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-25 08:46:05,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:46:05,855 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:46:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:05,856 INFO L225 Difference]: With dead ends: 356 [2018-07-25 08:46:05,856 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:46:05,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:46:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:46:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:46:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:46:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:46:05,933 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:46:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:05,933 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:46:05,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:46:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:46:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:46:05,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:05,934 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 08:46:05,934 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -369916471, now seen corresponding path program 114 times [2018-07-25 08:46:05,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:06,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:06,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:46:06,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:46:06,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:46:06,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:46:06,138 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 08:46:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:06,417 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 08:46:06,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:46:06,417 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 08:46:06,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:06,417 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:46:06,417 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:46:06,418 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:46:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:46:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-07-25 08:46:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:46:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:46:06,506 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 08:46:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:06,506 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:46:06,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:46:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:46:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:46:06,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:06,507 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:46:06,507 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:06,508 INFO L82 PathProgramCache]: Analyzing trace with hash 992490181, now seen corresponding path program 115 times [2018-07-25 08:46:06,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:06,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:06,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:46:06,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:46:06,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:46:06,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:46:06,837 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 08:46:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,792 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 08:46:07,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:46:07,792 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:46:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,793 INFO L225 Difference]: With dead ends: 362 [2018-07-25 08:46:07,793 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:46:07,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:46:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:46:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:46:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:46:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:46:07,867 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 08:46:07,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,867 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:46:07,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:46:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:46:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:46:07,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,868 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 08:46:07,868 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,869 INFO L82 PathProgramCache]: Analyzing trace with hash 668200959, now seen corresponding path program 116 times [2018-07-25 08:46:07,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:46:08,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:46:08,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:46:08,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:46:08,069 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 64 states. [2018-07-25 08:46:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:08,291 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 08:46:08,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:46:08,291 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 240 [2018-07-25 08:46:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:08,292 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:46:08,292 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:46:08,294 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:46:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:46:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 08:46:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:46:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:46:08,360 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:46:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:08,360 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:46:08,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:46:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:46:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:46:08,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:08,361 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:46:08,361 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2104039557, now seen corresponding path program 117 times [2018-07-25 08:46:08,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:46:08,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:46:08,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:46:08,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:46:08,688 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 08:46:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:09,515 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-07-25 08:46:09,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:46:09,515 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:46:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:09,516 INFO L225 Difference]: With dead ends: 368 [2018-07-25 08:46:09,516 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:46:09,518 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 08:46:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:46:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:46:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:46:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 08:46:09,585 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 08:46:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:09,586 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 08:46:09,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:46:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 08:46:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:46:09,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:09,587 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 08:46:09,587 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:09,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1941080139, now seen corresponding path program 118 times [2018-07-25 08:46:09,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:09,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:09,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:46:09,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:46:09,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:46:09,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:46:09,811 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 08:46:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:10,082 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 08:46:10,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:46:10,083 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 08:46:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:10,083 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:46:10,083 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:46:10,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:46:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:46:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-07-25 08:46:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:46:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:46:10,151 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 08:46:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:10,152 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:46:10,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:46:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:46:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:46:10,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:10,153 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:46:10,153 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1362273871, now seen corresponding path program 119 times [2018-07-25 08:46:10,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:10,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:10,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:46:10,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:46:10,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:46:10,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:46:10,449 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 08:46:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,242 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-07-25 08:46:11,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:46:11,242 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:46:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,243 INFO L225 Difference]: With dead ends: 374 [2018-07-25 08:46:11,243 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:46:11,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:46:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:46:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:46:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:46:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:46:11,313 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:46:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,313 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:46:11,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:46:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:46:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:46:11,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,314 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 08:46:11,314 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash -571654933, now seen corresponding path program 120 times [2018-07-25 08:46:11,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:11,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:11,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:46:11,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:46:11,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:46:11,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:11,594 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 66 states. [2018-07-25 08:46:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,842 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 08:46:11,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:46:11,842 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 248 [2018-07-25 08:46:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,842 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:46:11,843 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:46:11,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:46:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:46:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-07-25 08:46:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:46:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:46:11,919 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 08:46:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,919 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:46:11,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:46:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:46:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:46:11,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,920 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:46:11,920 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash 395356519, now seen corresponding path program 121 times [2018-07-25 08:46:11,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:12,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:12,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:46:12,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:46:12,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:46:12,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:46:12,240 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 08:46:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,082 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-07-25 08:46:13,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:46:13,082 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:46:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,082 INFO L225 Difference]: With dead ends: 380 [2018-07-25 08:46:13,083 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:46:13,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:46:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:46:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:46:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:46:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:46:13,163 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 08:46:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:13,163 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:46:13,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:46:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:46:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:46:13,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:13,165 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 08:46:13,165 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:13,165 INFO L82 PathProgramCache]: Analyzing trace with hash 557342625, now seen corresponding path program 122 times [2018-07-25 08:46:13,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:13,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:13,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:46:13,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:46:13,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:46:13,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:13,382 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 08:46:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,618 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 08:46:13,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:46:13,618 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 08:46:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,619 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:46:13,619 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:46:13,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:46:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:46:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 08:46:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:46:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:46:13,691 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:46:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:13,691 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:46:13,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:46:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:46:13,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:46:13,692 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:13,692 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:46:13,692 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:13,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1264716131, now seen corresponding path program 123 times [2018-07-25 08:46:13,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:14,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:14,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:46:14,033 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:46:14,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:46:14,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:46:14,035 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 08:46:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:14,892 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-07-25 08:46:14,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:46:14,892 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:46:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:14,893 INFO L225 Difference]: With dead ends: 386 [2018-07-25 08:46:14,893 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:46:14,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:46:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:46:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:46:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:46:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 08:46:14,967 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 08:46:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:14,967 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 08:46:14,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:46:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 08:46:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:46:14,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:14,968 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 08:46:14,969 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1700003881, now seen corresponding path program 124 times [2018-07-25 08:46:14,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:46:15,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:46:15,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:46:15,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:46:15,297 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 68 states. [2018-07-25 08:46:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:15,772 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 08:46:15,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:46:15,772 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 256 [2018-07-25 08:46:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:15,773 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:46:15,773 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:46:15,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:46:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:46:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-07-25 08:46:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:46:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:46:15,944 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 08:46:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:15,945 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:46:15,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:46:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:46:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:46:15,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:15,946 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:46:15,946 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1616223917, now seen corresponding path program 125 times [2018-07-25 08:46:15,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:16,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:16,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:46:16,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:46:16,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:46:16,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:46:16,285 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 08:46:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:17,241 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 08:46:17,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:46:17,241 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:46:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:17,242 INFO L225 Difference]: With dead ends: 392 [2018-07-25 08:46:17,242 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:46:17,245 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 08:46:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:46:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:46:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:46:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:46:17,325 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:46:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,326 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:46:17,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:46:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:46:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:46:17,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,327 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 08:46:17,327 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1354579341, now seen corresponding path program 126 times [2018-07-25 08:46:17,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:17,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:17,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:46:17,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:46:17,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:46:17,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:46:17,598 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 08:46:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:17,885 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 08:46:17,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:46:17,885 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 08:46:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:17,886 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:46:17,886 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:46:17,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:46:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:46:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-07-25 08:46:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:46:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:46:17,975 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 08:46:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,976 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:46:17,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:46:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:46:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:46:17,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,977 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:46:17,977 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash 375589257, now seen corresponding path program 127 times [2018-07-25 08:46:17,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:18,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:18,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:46:18,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:46:18,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:46:18,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:46:18,400 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 08:46:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:19,432 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-07-25 08:46:19,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:46:19,432 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:46:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:19,433 INFO L225 Difference]: With dead ends: 398 [2018-07-25 08:46:19,433 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:46:19,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8841, Invalid=29771, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:46:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:46:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:46:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:46:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:46:19,522 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 08:46:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:19,522 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:46:19,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:46:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:46:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:46:19,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:19,524 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 08:46:19,525 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash 232339651, now seen corresponding path program 128 times [2018-07-25 08:46:19,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:19,794 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:19,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:46:19,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:46:19,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:46:19,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:46:19,795 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 70 states. [2018-07-25 08:46:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:20,115 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 08:46:20,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:46:20,115 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 264 [2018-07-25 08:46:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:20,115 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:46:20,116 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:46:20,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:46:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:46:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 08:46:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:46:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:46:20,197 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:46:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:20,197 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:46:20,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:46:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:46:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:46:20,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:20,198 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:46:20,198 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:20,198 INFO L82 PathProgramCache]: Analyzing trace with hash -59961537, now seen corresponding path program 129 times [2018-07-25 08:46:20,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:20,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:20,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:46:20,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:46:20,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:46:20,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:46:20,637 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 08:46:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:21,658 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-07-25 08:46:21,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:46:21,659 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:46:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:21,660 INFO L225 Difference]: With dead ends: 404 [2018-07-25 08:46:21,660 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:46:21,663 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 08:46:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:46:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:46:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:46:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 08:46:21,742 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 08:46:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:21,742 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 08:46:21,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:46:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 08:46:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:46:21,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:21,743 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 08:46:21,743 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash -496692871, now seen corresponding path program 130 times [2018-07-25 08:46:21,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:22,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:22,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:46:22,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:46:22,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:46:22,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:46:22,008 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 08:46:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,317 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 08:46:22,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:46:22,317 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 08:46:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,318 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:46:22,318 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:46:22,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:46:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:46:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-07-25 08:46:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:46:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:46:22,416 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 08:46:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,416 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:46:22,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:46:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:46:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:46:22,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,417 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:46:22,417 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -580545931, now seen corresponding path program 131 times [2018-07-25 08:46:22,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:22,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:22,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:46:22,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:46:22,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:46:22,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:46:22,846 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 08:46:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:23,544 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-07-25 08:46:23,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:46:23,544 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:46:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:23,545 INFO L225 Difference]: With dead ends: 410 [2018-07-25 08:46:23,545 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:46:23,548 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 08:46:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:46:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:46:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:46:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:46:23,635 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:46:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:23,635 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:46:23,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:46:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:46:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:46:23,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:23,636 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 08:46:23,636 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 649979823, now seen corresponding path program 132 times [2018-07-25 08:46:23,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:46:23,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:46:23,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:46:23,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:46:23,934 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 72 states. [2018-07-25 08:46:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,248 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 08:46:24,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:46:24,248 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 272 [2018-07-25 08:46:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,249 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:46:24,249 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:46:24,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:46:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:46:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-07-25 08:46:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:46:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:46:24,396 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 08:46:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,397 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:46:24,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:46:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:46:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:46:24,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,398 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:46:24,398 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1860285227, now seen corresponding path program 133 times [2018-07-25 08:46:24,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:46:24,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:46:24,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:46:24,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:46:24,774 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 08:46:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,802 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-07-25 08:46:25,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:46:25,802 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:46:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,803 INFO L225 Difference]: With dead ends: 416 [2018-07-25 08:46:25,803 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:46:25,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9657, Invalid=32573, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:46:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:46:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:46:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:46:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:46:25,925 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 08:46:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,925 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:46:25,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:46:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:46:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:46:25,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,926 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 08:46:25,926 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,927 INFO L82 PathProgramCache]: Analyzing trace with hash -46605467, now seen corresponding path program 134 times [2018-07-25 08:46:25,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:46:26,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:46:26,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:46:26,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:46:26,221 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 08:46:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,555 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 08:46:26,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:46:26,555 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 08:46:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,556 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:46:26,556 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:46:26,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:46:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:46:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 08:46:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:46:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:46:26,657 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:46:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,657 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:46:26,657 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:46:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:46:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:46:26,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,658 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:46:26,659 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1838247583, now seen corresponding path program 135 times [2018-07-25 08:46:26,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:46:27,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:46:27,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:46:27,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:46:27,089 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 08:46:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,337 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 08:46:28,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:46:28,337 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:46:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,338 INFO L225 Difference]: With dead ends: 422 [2018-07-25 08:46:28,338 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:46:28,342 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 08:46:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:46:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:46:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:46:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 08:46:28,494 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 08:46:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,494 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 08:46:28,494 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:46:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 08:46:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:46:28,495 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,495 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 08:46:28,495 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1411583131, now seen corresponding path program 136 times [2018-07-25 08:46:28,496 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:28,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:28,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:46:28,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:46:28,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:46:28,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:46:28,857 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 74 states. [2018-07-25 08:46:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,170 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 08:46:29,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:46:29,170 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 280 [2018-07-25 08:46:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,171 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:46:29,171 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:46:29,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4900 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:46:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:46:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2018-07-25 08:46:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:46:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:46:29,276 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 08:46:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:29,276 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:46:29,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:46:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:46:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:46:29,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:29,277 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:46:29,277 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash -678343401, now seen corresponding path program 137 times [2018-07-25 08:46:29,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:46:29,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:46:29,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:46:29,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:46:29,722 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 08:46:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:30,770 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2018-07-25 08:46:30,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:46:30,770 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:46:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:30,771 INFO L225 Difference]: With dead ends: 428 [2018-07-25 08:46:30,771 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:46:30,774 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 08:46:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:46:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:46:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:46:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:46:30,869 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:46:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,870 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:46:30,870 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:46:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:46:30,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:46:30,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,870 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 08:46:30,871 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1740741457, now seen corresponding path program 138 times [2018-07-25 08:46:30,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:31,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:31,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:46:31,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:46:31,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:46:31,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:46:31,190 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 08:46:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,521 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 08:46:31,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:46:31,522 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 08:46:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,522 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:46:31,523 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:46:31,524 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:46:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:46:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-07-25 08:46:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:46:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:46:31,622 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 08:46:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,622 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:46:31,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:46:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:46:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:46:31,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,623 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:46:31,623 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2110195277, now seen corresponding path program 139 times [2018-07-25 08:46:31,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4970 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:32,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:46:32,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:46:32,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:46:32,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:46:32,097 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 08:46:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:33,379 INFO L93 Difference]: Finished difference Result 434 states and 436 transitions. [2018-07-25 08:46:33,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:46:33,380 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:46:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:33,380 INFO L225 Difference]: With dead ends: 434 [2018-07-25 08:46:33,380 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:46:33,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:46:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:46:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:46:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:46:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:46:33,471 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 08:46:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:33,471 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:46:33,471 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:46:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:46:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:46:33,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:33,472 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 08:46:33,473 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1001281657, now seen corresponding path program 140 times [2018-07-25 08:46:33,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:46:33,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:46:33,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:46:33,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:46:33,761 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 76 states. [2018-07-25 08:46:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,077 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 08:46:34,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:46:34,077 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 288 [2018-07-25 08:46:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,078 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:46:34,078 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:46:34,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:46:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:46:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 08:46:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:46:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:46:34,183 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:46:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,183 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:46:34,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:46:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:46:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:46:34,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,185 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:46:34,185 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash -159064829, now seen corresponding path program 141 times [2018-07-25 08:46:34,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:34,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:34,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:46:34,600 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:46:34,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:46:34,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:46:34,602 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 08:46:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:35,886 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2018-07-25 08:46:35,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:46:35,886 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:46:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:35,887 INFO L225 Difference]: With dead ends: 440 [2018-07-25 08:46:35,887 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:46:35,890 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 08:46:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:46:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:46:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:46:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 08:46:35,998 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 08:46:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:35,998 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 08:46:35,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:46:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 08:46:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:46:35,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:35,999 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 08:46:36,000 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash -938979011, now seen corresponding path program 142 times [2018-07-25 08:46:36,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:36,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:36,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:46:36,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:46:36,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:46:36,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:46:36,310 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 08:46:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,648 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 08:46:36,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:46:36,649 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 08:46:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,649 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:46:36,649 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:46:36,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:46:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:46:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-07-25 08:46:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:46:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:46:36,746 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 08:46:36,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,746 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:46:36,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:46:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:46:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:46:36,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,747 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:46:36,747 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash -415764167, now seen corresponding path program 143 times [2018-07-25 08:46:36,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5256 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:37,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:37,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:46:37,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:46:37,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:46:37,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:46:37,281 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 08:46:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:38,627 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2018-07-25 08:46:38,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:46:38,627 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:46:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:38,628 INFO L225 Difference]: With dead ends: 446 [2018-07-25 08:46:38,628 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:46:38,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:46:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:46:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:46:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:46:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:46:38,726 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:46:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:38,726 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:46:38,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:46:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:46:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:46:38,728 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:38,728 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 08:46:38,728 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1525499789, now seen corresponding path program 144 times [2018-07-25 08:46:38,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:46:39,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:46:39,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:46:39,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:46:39,007 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 78 states. [2018-07-25 08:46:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,330 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 08:46:39,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:46:39,330 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 296 [2018-07-25 08:46:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,331 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:46:39,331 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:46:39,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:46:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:46:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-07-25 08:46:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:46:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:46:39,434 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 08:46:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,434 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:46:39,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:46:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:46:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:46:39,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,435 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:46:39,435 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1421516049, now seen corresponding path program 145 times [2018-07-25 08:46:39,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:46:39,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:46:39,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:46:39,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:46:39,904 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 08:46:41,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,216 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 08:46:41,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:46:41,217 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:46:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,217 INFO L225 Difference]: With dead ends: 452 [2018-07-25 08:46:41,217 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:46:41,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11397, Invalid=38555, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:46:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:46:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:46:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:46:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:46:41,318 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 08:46:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,319 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:46:41,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:46:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:46:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:46:41,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,320 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 08:46:41,320 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -476709591, now seen corresponding path program 146 times [2018-07-25 08:46:41,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:46:41,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:46:41,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:46:41,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:46:41,671 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 08:46:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,993 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 08:46:41,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:46:41,994 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 08:46:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,995 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:46:41,995 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:46:41,997 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:46:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:46:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 08:46:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:46:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:46:42,164 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:46:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,165 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:46:42,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:46:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:46:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:46:42,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,166 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:46:42,166 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1443516965, now seen corresponding path program 147 times [2018-07-25 08:46:42,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5550 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:42,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:42,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:46:42,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:46:42,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:46:42,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:46:42,618 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 08:46:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,606 INFO L93 Difference]: Finished difference Result 458 states and 460 transitions. [2018-07-25 08:46:43,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:46:43,606 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:46:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,607 INFO L225 Difference]: With dead ends: 458 [2018-07-25 08:46:43,607 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:46:43,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11701, Invalid=39601, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:46:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:46:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:46:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:46:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 08:46:43,711 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 08:46:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,711 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 08:46:43,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:46:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 08:46:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:46:43,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,712 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 08:46:43,712 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1672429407, now seen corresponding path program 148 times [2018-07-25 08:46:43,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:46:44,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:46:44,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:46:44,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:46:44,010 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 80 states. [2018-07-25 08:46:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,360 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 08:46:44,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:46:44,360 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 304 [2018-07-25 08:46:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,361 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:46:44,361 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:46:44,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:46:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:46:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2018-07-25 08:46:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:46:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:46:44,466 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 08:46:44,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,467 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:46:44,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:46:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:46:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:46:44,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,468 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:46:44,468 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,468 INFO L82 PathProgramCache]: Analyzing trace with hash 886824667, now seen corresponding path program 149 times [2018-07-25 08:46:44,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:46:44,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:46:44,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:46:44,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:46:44,970 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 08:46:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,772 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2018-07-25 08:46:45,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:46:45,772 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:46:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,773 INFO L225 Difference]: With dead ends: 464 [2018-07-25 08:46:45,773 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:46:45,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12009, Invalid=40661, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:46:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:46:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:46:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:46:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:46:45,916 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:46:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,916 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:46:45,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:46:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:46:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:46:45,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,918 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 08:46:45,918 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,918 INFO L82 PathProgramCache]: Analyzing trace with hash -546070763, now seen corresponding path program 150 times [2018-07-25 08:46:45,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:46:46,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:46:46,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:46:46,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:46:46,251 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 08:46:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,628 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 08:46:46,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:46:46,628 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 08:46:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,629 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:46:46,629 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:46:46,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:46:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:46:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-07-25 08:46:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:46:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:46:46,752 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 08:46:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,752 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:46:46,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:46:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:46:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:46:46,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,753 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:46:46,754 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,754 INFO L82 PathProgramCache]: Analyzing trace with hash -788059887, now seen corresponding path program 151 times [2018-07-25 08:46:46,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5852 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:47,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:47,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:46:47,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:46:47,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:46:47,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:46:47,303 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 08:46:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,390 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2018-07-25 08:46:48,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:46:48,391 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:46:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,391 INFO L225 Difference]: With dead ends: 470 [2018-07-25 08:46:48,391 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:46:48,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:46:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:46:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:46:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:46:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:46:48,518 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 08:46:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,518 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:46:48,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:46:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:46:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:46:48,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,519 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 08:46:48,519 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,519 INFO L82 PathProgramCache]: Analyzing trace with hash -319800245, now seen corresponding path program 152 times [2018-07-25 08:46:48,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:48,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:48,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:46:48,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:46:48,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:46:48,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:46:48,884 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 82 states. [2018-07-25 08:46:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:49,283 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 08:46:49,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:46:49,283 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 312 [2018-07-25 08:46:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:49,283 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:46:49,283 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:46:49,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:46:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 08:46:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:46:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:46:49,394 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:46:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:49,394 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:46:49,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:46:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:46:49,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:46:49,395 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:49,395 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:46:49,395 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:49,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1909543111, now seen corresponding path program 153 times [2018-07-25 08:46:49,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:46:49,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:46:49,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:46:49,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:46:49,935 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 08:46:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:51,705 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2018-07-25 08:46:51,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:46:51,705 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:46:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:51,705 INFO L225 Difference]: With dead ends: 476 [2018-07-25 08:46:51,706 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:46:51,710 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 08:46:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:46:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:46:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:46:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 08:46:51,912 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 08:46:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:51,913 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 08:46:51,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:46:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 08:46:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:46:51,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:51,915 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 08:46:51,915 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2144717055, now seen corresponding path program 154 times [2018-07-25 08:46:51,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:52,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:52,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:46:52,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:46:52,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:46:52,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:46:52,304 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 08:46:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:52,693 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-07-25 08:46:52,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:46:52,693 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 08:46:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:52,694 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:46:52,694 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:46:52,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:52,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:46:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-07-25 08:46:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:46:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:46:52,808 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 08:46:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:52,808 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:46:52,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:46:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:46:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:46:52,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:52,810 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 08:46:52,810 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash 511145469, now seen corresponding path program 155 times [2018-07-25 08:46:52,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6162 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:53,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:53,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:46:53,371 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:46:53,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:46:53,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:53,372 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 160 states. [2018-07-25 08:46:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:54,949 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 08:46:54,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:46:54,950 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:46:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:54,950 INFO L225 Difference]: With dead ends: 482 [2018-07-25 08:46:54,950 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:46:54,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:46:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:46:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:46:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:46:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 08:46:55,068 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 08:46:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,068 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 08:46:55,068 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:46:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 08:46:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:46:55,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,069 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 08:46:55,069 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,069 INFO L82 PathProgramCache]: Analyzing trace with hash -316756169, now seen corresponding path program 156 times [2018-07-25 08:46:55,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:55,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:55,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:46:55,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:46:55,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:46:55,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:46:55,411 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 84 states. [2018-07-25 08:46:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:55,837 INFO L93 Difference]: Finished difference Result 329 states and 330 transitions. [2018-07-25 08:46:55,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:46:55,838 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 320 [2018-07-25 08:46:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:55,838 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:46:55,839 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:46:55,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:46:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-07-25 08:46:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:46:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 08:46:55,965 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 08:46:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,965 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 08:46:55,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:46:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 08:46:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:46:55,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,966 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 08:46:55,966 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,966 INFO L82 PathProgramCache]: Analyzing trace with hash 539932851, now seen corresponding path program 157 times [2018-07-25 08:46:55,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:56,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:56,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:46:56,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:46:56,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:46:56,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:56,483 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 162 states. [2018-07-25 08:46:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:58,234 INFO L93 Difference]: Finished difference Result 488 states and 490 transitions. [2018-07-25 08:46:58,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:46:58,234 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:46:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:58,235 INFO L225 Difference]: With dead ends: 488 [2018-07-25 08:46:58,235 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:46:58,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:46:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:46:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:46:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:46:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 08:46:58,409 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 08:46:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:58,410 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 08:46:58,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:46:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 08:46:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:46:58,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:58,411 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 08:46:58,411 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:58,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1774372077, now seen corresponding path program 158 times [2018-07-25 08:46:58,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:58,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:58,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:46:58,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:46:58,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:46:58,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:46:58,780 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 08:46:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:59,213 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 08:46:59,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:46:59,213 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 08:46:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:59,214 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:46:59,214 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:46:59,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:46:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 08:46:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:46:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:46:59,349 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 08:46:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:59,349 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:46:59,349 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:46:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:46:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:46:59,350 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:59,351 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 08:46:59,351 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 69482729, now seen corresponding path program 159 times [2018-07-25 08:46:59,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6480 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:59,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:59,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:46:59,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:46:59,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:46:59,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:59,892 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 164 states. [2018-07-25 08:47:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:00,849 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2018-07-25 08:47:00,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:47:00,849 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:47:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:00,849 INFO L225 Difference]: With dead ends: 494 [2018-07-25 08:47:00,849 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:47:00,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:47:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:47:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:47:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:47:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 08:47:00,983 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 08:47:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:00,983 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 08:47:00,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:47:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 08:47:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:47:00,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:00,985 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 08:47:00,985 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash 268671011, now seen corresponding path program 160 times [2018-07-25 08:47:00,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:47:01,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:47:01,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:47:01,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:47:01,391 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 86 states. [2018-07-25 08:47:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:01,832 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2018-07-25 08:47:01,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:47:01,832 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 328 [2018-07-25 08:47:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:01,833 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:47:01,833 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:47:01,835 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6724 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:47:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:47:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-07-25 08:47:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:47:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:47:02,014 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 08:47:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,014 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:47:02,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:47:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:47:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:47:02,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,015 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 08:47:02,016 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,016 INFO L82 PathProgramCache]: Analyzing trace with hash 494737055, now seen corresponding path program 161 times [2018-07-25 08:47:02,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:02,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:02,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:47:02,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:47:02,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:47:02,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:47:02,622 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 166 states. [2018-07-25 08:47:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,651 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2018-07-25 08:47:04,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:47:04,652 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:47:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,652 INFO L225 Difference]: With dead ends: 500 [2018-07-25 08:47:04,652 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:47:04,657 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 08:47:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:47:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:47:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:47:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 08:47:04,848 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 08:47:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,849 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 08:47:04,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:47:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 08:47:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:47:04,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,850 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 08:47:04,850 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1606830297, now seen corresponding path program 162 times [2018-07-25 08:47:04,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:05,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:05,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:47:05,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:47:05,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:47:05,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:47:05,264 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 08:47:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:05,707 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-07-25 08:47:05,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:47:05,707 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 08:47:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:05,708 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:47:05,708 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:47:05,709 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:47:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:47:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-07-25 08:47:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:47:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 08:47:05,833 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 08:47:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:05,833 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 08:47:05,833 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:47:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 08:47:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:47:05,834 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:05,835 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 08:47:05,835 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2024377899, now seen corresponding path program 163 times [2018-07-25 08:47:05,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6806 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:47:06,437 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:47:06,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:47:06,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:47:06,438 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 168 states. [2018-07-25 08:47:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:08,302 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2018-07-25 08:47:08,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:47:08,302 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:47:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:08,303 INFO L225 Difference]: With dead ends: 506 [2018-07-25 08:47:08,303 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:47:08,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:47:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:47:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:47:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:47:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 08:47:08,435 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 08:47:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:08,436 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 08:47:08,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:47:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 08:47:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:47:08,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:08,437 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 08:47:08,437 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1088943887, now seen corresponding path program 164 times [2018-07-25 08:47:08,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:47:08,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:47:08,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:47:08,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:08,795 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 88 states. [2018-07-25 08:47:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,227 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 08:47:09,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:47:09,227 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 336 [2018-07-25 08:47:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,227 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:47:09,228 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:47:09,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7056 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:47:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:47:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 08:47:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:47:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:47:09,358 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 08:47:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,358 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:47:09,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:47:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:47:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:47:09,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,359 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 08:47:09,359 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1497011573, now seen corresponding path program 165 times [2018-07-25 08:47:09,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:09,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:09,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:47:09,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:47:09,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:47:09,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:47:09,941 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 170 states. [2018-07-25 08:47:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:11,452 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 08:47:11,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:47:11,452 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:47:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:11,453 INFO L225 Difference]: With dead ends: 512 [2018-07-25 08:47:11,453 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:47:11,455 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:47:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:47:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:47:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:47:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 08:47:11,604 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 08:47:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,605 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 08:47:11,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:47:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 08:47:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:47:11,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,606 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 08:47:11,606 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2059550011, now seen corresponding path program 166 times [2018-07-25 08:47:11,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:11,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:11,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:47:11,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:47:11,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:47:11,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:47:11,983 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 08:47:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:12,394 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2018-07-25 08:47:12,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:47:12,394 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 08:47:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:12,394 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:47:12,395 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:47:12,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:47:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:47:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2018-07-25 08:47:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:47:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:47:12,524 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 08:47:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:12,525 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:47:12,525 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:47:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:47:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:47:12,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:12,526 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 08:47:12,526 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash 752296129, now seen corresponding path program 167 times [2018-07-25 08:47:12,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7140 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:13,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:13,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:47:13,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:47:13,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:47:13,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:47:13,097 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 172 states. [2018-07-25 08:47:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:14,980 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2018-07-25 08:47:14,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:47:14,980 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:47:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:14,981 INFO L225 Difference]: With dead ends: 518 [2018-07-25 08:47:14,981 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:47:14,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:47:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:47:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:47:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:47:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 08:47:15,114 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 08:47:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,114 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 08:47:15,114 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:47:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 08:47:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:47:15,115 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,115 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 08:47:15,115 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash -359347205, now seen corresponding path program 168 times [2018-07-25 08:47:15,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:15,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:15,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:47:15,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:47:15,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:47:15,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:47:15,554 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 90 states. [2018-07-25 08:47:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,988 INFO L93 Difference]: Finished difference Result 353 states and 354 transitions. [2018-07-25 08:47:15,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:47:15,988 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 344 [2018-07-25 08:47:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,989 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:47:15,989 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:47:15,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:47:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:47:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2018-07-25 08:47:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:47:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 08:47:16,123 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 08:47:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:16,123 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 08:47:16,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:47:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 08:47:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:47:16,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:16,124 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 08:47:16,125 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1735347081, now seen corresponding path program 169 times [2018-07-25 08:47:16,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:16,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:16,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:47:16,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:47:16,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:47:16,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:47:16,715 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 174 states. [2018-07-25 08:47:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:18,517 INFO L93 Difference]: Finished difference Result 524 states and 526 transitions. [2018-07-25 08:47:18,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:47:18,517 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:47:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:18,518 INFO L225 Difference]: With dead ends: 524 [2018-07-25 08:47:18,518 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:47:18,522 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 08:47:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:47:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:47:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:47:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 08:47:18,673 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 08:47:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,674 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 08:47:18,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:47:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 08:47:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:47:18,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,675 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 08:47:18,675 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1666043215, now seen corresponding path program 170 times [2018-07-25 08:47:18,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:19,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:19,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:47:19,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:47:19,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:47:19,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:47:19,191 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 08:47:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:19,673 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 08:47:19,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:47:19,674 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 08:47:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:19,674 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:47:19,674 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:47:19,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:47:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:47:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 08:47:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:47:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:47:19,824 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 08:47:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:19,824 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:47:19,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:47:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:47:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:47:19,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:19,825 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 08:47:19,825 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash 955205037, now seen corresponding path program 171 times [2018-07-25 08:47:19,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7482 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:20,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:20,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:47:20,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:47:20,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:47:20,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:47:20,521 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 176 states. [2018-07-25 08:47:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:22,802 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2018-07-25 08:47:22,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:47:22,802 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:47:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:22,803 INFO L225 Difference]: With dead ends: 530 [2018-07-25 08:47:22,803 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:47:22,807 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 08:47:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:47:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:47:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:47:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 08:47:22,943 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 08:47:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:22,943 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 08:47:22,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:47:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 08:47:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:47:22,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:22,944 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 08:47:22,944 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash 928192231, now seen corresponding path program 172 times [2018-07-25 08:47:22,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:47:23,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:47:23,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:47:23,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:47:23,353 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 92 states. [2018-07-25 08:47:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,815 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2018-07-25 08:47:23,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:47:23,815 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 352 [2018-07-25 08:47:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,816 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:47:23,816 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:47:23,817 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:47:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:47:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-07-25 08:47:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:47:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:47:24,001 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 08:47:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,001 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:47:24,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:47:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:47:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:47:24,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,002 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 08:47:24,002 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1360530333, now seen corresponding path program 173 times [2018-07-25 08:47:24,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:47:24,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:47:24,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:47:24,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:47:24,609 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 178 states. [2018-07-25 08:47:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,895 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2018-07-25 08:47:26,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:47:26,895 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:47:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,896 INFO L225 Difference]: With dead ends: 536 [2018-07-25 08:47:26,896 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:47:26,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 08:47:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:47:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:47:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:47:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 08:47:27,045 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 08:47:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,045 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 08:47:27,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:47:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 08:47:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:47:27,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,047 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 08:47:27,047 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1210882205, now seen corresponding path program 174 times [2018-07-25 08:47:27,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:47:27,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:47:27,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:47:27,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:47:27,451 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 08:47:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,967 INFO L93 Difference]: Finished difference Result 365 states and 366 transitions. [2018-07-25 08:47:27,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:47:27,967 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 08:47:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,968 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:47:27,968 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:47:27,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:47:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:47:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-07-25 08:47:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:47:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 08:47:28,132 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 08:47:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,132 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 08:47:28,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:47:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 08:47:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:47:28,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,133 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 08:47:28,133 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,134 INFO L82 PathProgramCache]: Analyzing trace with hash -278404967, now seen corresponding path program 175 times [2018-07-25 08:47:28,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7832 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:47:28,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:47:28,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:47:28,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:47:28,889 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 180 states. [2018-07-25 08:47:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:31,505 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 08:47:31,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:47:31,505 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:47:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:31,506 INFO L225 Difference]: With dead ends: 542 [2018-07-25 08:47:31,506 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:47:31,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 08:47:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:47:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:47:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:47:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 08:47:31,652 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 08:47:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:31,652 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 08:47:31,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:47:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 08:47:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:47:31,653 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:31,654 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 08:47:31,654 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1357633491, now seen corresponding path program 176 times [2018-07-25 08:47:31,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:47:32,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:47:32,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:47:32,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:47:32,082 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 94 states. [2018-07-25 08:47:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,551 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 08:47:32,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:47:32,551 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 360 [2018-07-25 08:47:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,552 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:47:32,552 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:47:32,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:47:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:47:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 08:47:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:47:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:47:32,698 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 08:47:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,698 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:47:32,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:47:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:47:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:47:32,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,699 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 08:47:32,699 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,699 INFO L82 PathProgramCache]: Analyzing trace with hash -984339889, now seen corresponding path program 177 times [2018-07-25 08:47:32,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:47:33,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:47:33,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:47:33,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:47:33,396 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 182 states. [2018-07-25 08:47:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,066 INFO L93 Difference]: Finished difference Result 548 states and 550 transitions. [2018-07-25 08:47:35,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:47:35,066 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:47:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,067 INFO L225 Difference]: With dead ends: 548 [2018-07-25 08:47:35,067 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:47:35,071 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 08:47:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:47:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:47:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:47:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 08:47:35,216 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 08:47:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,216 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 08:47:35,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:47:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 08:47:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:47:35,217 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,217 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 08:47:35,217 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1228272777, now seen corresponding path program 178 times [2018-07-25 08:47:35,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:35,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:35,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:47:35,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:47:35,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:47:35,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:47:35,727 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 08:47:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,215 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2018-07-25 08:47:36,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:47:36,215 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 08:47:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,216 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:47:36,216 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:47:36,218 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:47:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:47:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2018-07-25 08:47:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:47:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 08:47:36,365 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 08:47:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,365 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 08:47:36,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:47:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 08:47:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:47:36,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,367 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 08:47:36,367 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash -745934459, now seen corresponding path program 179 times [2018-07-25 08:47:36,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 8190 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:37,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:37,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:47:37,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:47:37,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:47:37,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:47:37,072 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 184 states. [2018-07-25 08:47:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,372 INFO L93 Difference]: Finished difference Result 554 states and 556 transitions. [2018-07-25 08:47:39,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:47:39,372 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:47:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,373 INFO L225 Difference]: With dead ends: 554 [2018-07-25 08:47:39,373 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:47:39,376 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 08:47:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:47:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:47:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:47:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 08:47:39,535 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 08:47:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,535 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 08:47:39,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:47:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 08:47:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:47:39,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,536 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 08:47:39,536 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1599598913, now seen corresponding path program 180 times [2018-07-25 08:47:39,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:47:39,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:47:39,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:47:39,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:47:39,973 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 96 states. [2018-07-25 08:47:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,486 INFO L93 Difference]: Finished difference Result 377 states and 378 transitions. [2018-07-25 08:47:40,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:47:40,486 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 368 [2018-07-25 08:47:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,487 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:47:40,487 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:47:40,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:47:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:47:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 371. [2018-07-25 08:47:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:47:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 08:47:40,642 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 08:47:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,643 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 08:47:40,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:47:40,643 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 08:47:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:47:40,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,644 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 08:47:40,644 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash 383669819, now seen corresponding path program 181 times [2018-07-25 08:47:40,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:41,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:47:41,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:47:41,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:47:41,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:47:41,375 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 186 states. [2018-07-25 08:47:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,086 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2018-07-25 08:47:43,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:47:43,087 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:47:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,087 INFO L225 Difference]: With dead ends: 560 [2018-07-25 08:47:43,087 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:47:43,091 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 08:47:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:47:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:47:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:47:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 08:47:43,246 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 08:47:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,246 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 08:47:43,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:47:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 08:47:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:47:43,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,247 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 08:47:43,247 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1059633547, now seen corresponding path program 182 times [2018-07-25 08:47:43,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:43,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:47:43,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:47:43,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:47:43,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:47:43,686 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 08:47:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,193 INFO L93 Difference]: Finished difference Result 381 states and 382 transitions. [2018-07-25 08:47:44,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:47:44,193 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 08:47:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,194 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:47:44,194 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:47:44,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:47:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:47:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-07-25 08:47:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:47:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 08:47:44,350 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 08:47:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,350 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 08:47:44,351 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:47:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 08:47:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:47:44,352 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,352 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 08:47:44,352 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,352 INFO L82 PathProgramCache]: Analyzing trace with hash -400656271, now seen corresponding path program 183 times [2018-07-25 08:47:44,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8556 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:47:45,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:47:45,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:47:45,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:47:45,092 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 188 states. [2018-07-25 08:47:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,618 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2018-07-25 08:47:47,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:47:47,618 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:47:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,619 INFO L225 Difference]: With dead ends: 566 [2018-07-25 08:47:47,619 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:47:47,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 08:47:47,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:47:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:47:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:47:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 08:47:47,777 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 08:47:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,777 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 08:47:47,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:47:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 08:47:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:47:47,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,779 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 08:47:47,780 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 256949163, now seen corresponding path program 184 times [2018-07-25 08:47:47,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:48,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:47:48,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:47:48,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:47:48,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:47:48,234 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 98 states. [2018-07-25 08:47:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,757 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2018-07-25 08:47:48,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:47:48,758 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 376 [2018-07-25 08:47:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,758 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:47:48,758 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:47:48,760 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8836 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:47:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:47:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-07-25 08:47:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:47:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 08:47:48,927 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 08:47:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,927 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 08:47:48,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:47:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 08:47:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:47:48,928 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,928 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 08:47:48,928 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2114943015, now seen corresponding path program 185 times [2018-07-25 08:47:48,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:49,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:47:49,692 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:47:49,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:47:49,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:47:49,694 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 190 states. [2018-07-25 08:47:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,273 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 08:47:52,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:47:52,273 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:47:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,274 INFO L225 Difference]: With dead ends: 572 [2018-07-25 08:47:52,274 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:47:52,277 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 08:47:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:47:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:47:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:47:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 08:47:52,436 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 08:47:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,436 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 08:47:52,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:47:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 08:47:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:47:52,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,437 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 08:47:52,437 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1872334433, now seen corresponding path program 186 times [2018-07-25 08:47:52,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:52,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:47:52,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:47:52,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:47:52,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:47:52,913 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 08:47:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,444 INFO L93 Difference]: Finished difference Result 389 states and 390 transitions. [2018-07-25 08:47:53,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:47:53,444 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 08:47:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,444 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:47:53,444 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:47:53,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:47:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:47:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-25 08:47:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:47:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 08:47:53,607 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 08:47:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,607 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 08:47:53,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:47:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 08:47:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:47:53,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,609 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 08:47:53,609 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash -277973667, now seen corresponding path program 187 times [2018-07-25 08:47:53,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8930 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:54,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:47:54,388 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:47:54,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:47:54,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:47:54,389 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 192 states. [2018-07-25 08:47:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,369 INFO L93 Difference]: Finished difference Result 578 states and 580 transitions. [2018-07-25 08:47:56,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:47:56,369 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:47:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,370 INFO L225 Difference]: With dead ends: 578 [2018-07-25 08:47:56,370 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:47:56,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 08:47:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:47:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:47:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:47:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 08:47:56,535 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 08:47:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,535 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 08:47:56,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:47:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 08:47:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:47:56,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,536 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 08:47:56,536 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1160699543, now seen corresponding path program 188 times [2018-07-25 08:47:56,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:57,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:47:57,004 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:47:57,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:47:57,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:57,005 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 100 states. [2018-07-25 08:47:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:57,561 INFO L93 Difference]: Finished difference Result 393 states and 394 transitions. [2018-07-25 08:47:57,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:47:57,561 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 384 [2018-07-25 08:47:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:57,562 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:47:57,562 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:47:57,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:47:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:47:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2018-07-25 08:47:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:47:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 08:47:57,729 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 08:47:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:57,729 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 08:47:57,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:47:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 08:47:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:47:57,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:57,731 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 08:47:57,731 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1259302893, now seen corresponding path program 189 times [2018-07-25 08:47:57,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:58,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:58,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:47:58,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:47:58,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:47:58,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:47:58,514 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 194 states. [2018-07-25 08:48:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,012 INFO L93 Difference]: Finished difference Result 584 states and 586 transitions. [2018-07-25 08:48:00,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:48:00,012 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:48:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,012 INFO L225 Difference]: With dead ends: 584 [2018-07-25 08:48:00,013 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:48:00,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 08:48:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:48:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:48:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:48:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 08:48:00,180 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 08:48:00,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,181 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 08:48:00,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:48:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 08:48:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:48:00,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,182 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 08:48:00,182 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,182 INFO L82 PathProgramCache]: Analyzing trace with hash -175780787, now seen corresponding path program 190 times [2018-07-25 08:48:00,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:00,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:48:00,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:48:00,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:48:00,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:48:00,663 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 08:48:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:01,243 INFO L93 Difference]: Finished difference Result 397 states and 398 transitions. [2018-07-25 08:48:01,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:48:01,244 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 08:48:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:01,244 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:48:01,244 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:48:01,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:48:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:48:01,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2018-07-25 08:48:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:48:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 08:48:01,415 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 08:48:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:01,416 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 08:48:01,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:48:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 08:48:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:48:01,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:01,418 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 08:48:01,418 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1421678519, now seen corresponding path program 191 times [2018-07-25 08:48:01,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9312 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:02,213 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:02,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:48:02,214 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:48:02,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:48:02,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:48:02,216 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 196 states. [2018-07-25 08:48:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:04,134 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-07-25 08:48:04,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:48:04,134 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:48:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:04,135 INFO L225 Difference]: With dead ends: 590 [2018-07-25 08:48:04,135 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:48:04,139 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 08:48:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:48:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:48:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:48:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 08:48:04,320 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 08:48:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:04,320 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 08:48:04,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:48:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 08:48:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:48:04,321 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:04,321 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 08:48:04,321 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:04,321 INFO L82 PathProgramCache]: Analyzing trace with hash -368347261, now seen corresponding path program 192 times [2018-07-25 08:48:04,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:04,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:04,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:48:04,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:48:04,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:48:04,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:48:04,897 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 102 states. [2018-07-25 08:48:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,550 INFO L93 Difference]: Finished difference Result 401 states and 402 transitions. [2018-07-25 08:48:05,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:48:05,550 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 392 [2018-07-25 08:48:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,551 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:48:05,551 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:48:05,554 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:48:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:48:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2018-07-25 08:48:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:48:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 08:48:05,750 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 08:48:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,750 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 08:48:05,750 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:48:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 08:48:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:48:05,751 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,751 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 08:48:05,752 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1794466305, now seen corresponding path program 193 times [2018-07-25 08:48:05,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:06,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:06,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:48:06,639 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:48:06,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:48:06,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:48:06,642 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 198 states. [2018-07-25 08:48:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:08,830 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2018-07-25 08:48:08,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:48:08,830 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:48:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:08,831 INFO L225 Difference]: With dead ends: 596 [2018-07-25 08:48:08,831 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:48:08,836 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 08:48:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:48:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:48:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:48:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 08:48:09,031 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 08:48:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:09,031 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 08:48:09,031 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:48:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 08:48:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:48:09,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:09,033 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 08:48:09,033 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash 304414777, now seen corresponding path program 194 times [2018-07-25 08:48:09,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:09,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:09,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:48:09,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:48:09,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:48:09,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:48:09,624 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 08:48:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:10,356 INFO L93 Difference]: Finished difference Result 405 states and 406 transitions. [2018-07-25 08:48:10,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:48:10,357 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 08:48:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:10,357 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:48:10,357 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:48:10,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:48:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:48:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-07-25 08:48:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:48:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 08:48:10,562 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 08:48:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:10,562 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 08:48:10,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:48:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 08:48:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:48:10,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:10,564 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 08:48:10,564 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 484757813, now seen corresponding path program 195 times [2018-07-25 08:48:10,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9702 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:11,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:11,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:48:11,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:48:11,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:48:11,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:48:11,486 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 200 states. [2018-07-25 08:48:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:14,047 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 08:48:14,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:48:14,047 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:48:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:14,048 INFO L225 Difference]: With dead ends: 602 [2018-07-25 08:48:14,048 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:48:14,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 08:48:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:48:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:48:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:48:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 08:48:14,231 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 08:48:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:14,231 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 08:48:14,231 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:48:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 08:48:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:48:14,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:14,233 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 08:48:14,233 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash -449870225, now seen corresponding path program 196 times [2018-07-25 08:48:14,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:14,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:48:14,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:48:14,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:48:14,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:48:14,818 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 104 states. [2018-07-25 08:48:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,477 INFO L93 Difference]: Finished difference Result 409 states and 410 transitions. [2018-07-25 08:48:15,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:48:15,477 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 400 [2018-07-25 08:48:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,478 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:48:15,478 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:48:15,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10000 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:48:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:48:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2018-07-25 08:48:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:48:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 08:48:15,683 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 08:48:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,683 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 08:48:15,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:48:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 08:48:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:48:15,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,684 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 08:48:15,685 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1466343915, now seen corresponding path program 197 times [2018-07-25 08:48:15,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:16,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:16,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:48:16,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:48:16,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:48:16,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:48:16,608 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 202 states. [2018-07-25 08:48:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:18,979 INFO L93 Difference]: Finished difference Result 608 states and 610 transitions. [2018-07-25 08:48:18,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:48:18,979 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:48:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:18,981 INFO L225 Difference]: With dead ends: 608 [2018-07-25 08:48:18,981 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:48:18,987 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 08:48:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:48:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:48:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:48:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 08:48:19,168 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 08:48:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:19,168 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 08:48:19,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:48:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 08:48:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:48:19,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:19,170 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 08:48:19,170 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -461362651, now seen corresponding path program 198 times [2018-07-25 08:48:19,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:19,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:19,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:48:19,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:48:19,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:48:19,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:48:19,782 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 08:48:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:20,380 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2018-07-25 08:48:20,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:48:20,380 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 08:48:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:20,381 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:48:20,381 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:48:20,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:48:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:48:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2018-07-25 08:48:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:48:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 08:48:20,564 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 08:48:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:20,565 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 08:48:20,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:48:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 08:48:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:48:20,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:20,566 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 08:48:20,566 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:20,566 INFO L82 PathProgramCache]: Analyzing trace with hash -987942879, now seen corresponding path program 199 times [2018-07-25 08:48:20,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10100 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:21,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:21,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:48:21,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:48:21,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:48:21,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:48:21,443 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 204 states. [2018-07-25 08:48:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:23,897 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2018-07-25 08:48:23,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:48:23,898 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:48:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:23,899 INFO L225 Difference]: With dead ends: 614 [2018-07-25 08:48:23,899 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:48:23,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 08:48:23,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:48:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:48:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:48:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 08:48:24,153 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 08:48:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:24,153 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 08:48:24,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:48:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 08:48:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:48:24,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:24,154 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 08:48:24,155 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:24,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387877, now seen corresponding path program 200 times [2018-07-25 08:48:24,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:24,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:24,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:48:24,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:48:24,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:48:24,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:48:24,728 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 106 states. [2018-07-25 08:48:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:25,405 INFO L93 Difference]: Finished difference Result 417 states and 418 transitions. [2018-07-25 08:48:25,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:48:25,405 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 408 [2018-07-25 08:48:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:25,406 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:48:25,406 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:48:25,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:48:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:48:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2018-07-25 08:48:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:48:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 08:48:25,598 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 08:48:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:25,598 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 08:48:25,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:48:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 08:48:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:48:25,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:25,600 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 08:48:25,600 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:25,600 INFO L82 PathProgramCache]: Analyzing trace with hash -728917033, now seen corresponding path program 201 times [2018-07-25 08:48:25,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:26,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:26,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:48:26,444 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:48:26,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:48:26,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:48:26,447 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 206 states. [2018-07-25 08:48:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,492 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2018-07-25 08:48:28,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:48:28,492 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:48:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,493 INFO L225 Difference]: With dead ends: 620 [2018-07-25 08:48:28,493 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:48:28,496 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 08:48:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:48:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:48:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:48:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 08:48:28,681 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 08:48:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,681 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 08:48:28,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:48:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 08:48:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:48:28,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,682 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 08:48:28,683 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 723536401, now seen corresponding path program 202 times [2018-07-25 08:48:28,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:29,279 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:29,279 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:48:29,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:48:29,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:48:29,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:48:29,280 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 08:48:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:29,933 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2018-07-25 08:48:29,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:48:29,934 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 08:48:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:29,934 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:48:29,934 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:48:29,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:48:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:48:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2018-07-25 08:48:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:48:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 08:48:30,126 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 08:48:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:30,126 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 08:48:30,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:48:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 08:48:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:48:30,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:30,128 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 08:48:30,128 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:30,128 INFO L82 PathProgramCache]: Analyzing trace with hash -466287347, now seen corresponding path program 203 times [2018-07-25 08:48:30,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10506 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:31,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:31,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:48:31,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:48:31,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:48:31,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:48:31,026 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 208 states. [2018-07-25 08:48:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:33,284 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2018-07-25 08:48:33,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:48:33,284 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:48:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:33,285 INFO L225 Difference]: With dead ends: 626 [2018-07-25 08:48:33,285 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:48:33,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 08:48:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:48:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:48:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:48:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 08:48:33,478 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 08:48:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:33,479 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 08:48:33,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:48:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 08:48:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:48:33,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:33,480 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 08:48:33,480 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash 955385415, now seen corresponding path program 204 times [2018-07-25 08:48:33,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:34,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:34,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:48:34,035 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:48:34,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:48:34,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:48:34,036 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 108 states. [2018-07-25 08:48:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:34,704 INFO L93 Difference]: Finished difference Result 425 states and 426 transitions. [2018-07-25 08:48:34,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:48:34,705 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 416 [2018-07-25 08:48:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:34,705 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:48:34,705 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:48:34,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10816 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:48:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:48:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-07-25 08:48:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:48:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 08:48:34,901 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 08:48:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:34,901 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 08:48:34,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:48:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 08:48:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:48:34,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:34,903 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 08:48:34,903 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:34,903 INFO L82 PathProgramCache]: Analyzing trace with hash -997684285, now seen corresponding path program 205 times [2018-07-25 08:48:34,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:35,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:35,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:48:35,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:48:35,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:48:35,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:48:35,824 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 210 states. [2018-07-25 08:48:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:37,859 INFO L93 Difference]: Finished difference Result 632 states and 634 transitions. [2018-07-25 08:48:37,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:48:37,859 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:48:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:37,860 INFO L225 Difference]: With dead ends: 632 [2018-07-25 08:48:37,860 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:48:37,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 08:48:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:48:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:48:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:48:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 08:48:38,058 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 08:48:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:38,058 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 08:48:38,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:48:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 08:48:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:48:38,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:38,060 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 08:48:38,060 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:38,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2079432707, now seen corresponding path program 206 times [2018-07-25 08:48:38,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:38,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:38,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:48:38,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:48:38,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:48:38,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:48:38,628 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 08:48:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,356 INFO L93 Difference]: Finished difference Result 429 states and 430 transitions. [2018-07-25 08:48:39,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:48:39,356 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 08:48:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,357 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:48:39,357 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:48:39,359 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:48:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:48:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2018-07-25 08:48:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:48:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 08:48:39,558 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 08:48:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,559 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 08:48:39,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:48:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 08:48:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:48:39,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,560 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 08:48:39,560 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1175105543, now seen corresponding path program 207 times [2018-07-25 08:48:39,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10920 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:48:40,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:48:40,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:48:40,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:48:40,548 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 212 states. [2018-07-25 08:48:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:42,307 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2018-07-25 08:48:42,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:48:42,307 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:48:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:42,308 INFO L225 Difference]: With dead ends: 638 [2018-07-25 08:48:42,308 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:48:42,315 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 08:48:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:48:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:48:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:48:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 08:48:42,515 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 08:48:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:42,515 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 08:48:42,515 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:48:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 08:48:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:48:42,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:42,516 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 08:48:42,516 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash -576555213, now seen corresponding path program 208 times [2018-07-25 08:48:42,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:43,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:43,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:48:43,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:48:43,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:48:43,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:48:43,169 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 110 states. [2018-07-25 08:48:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:43,857 INFO L93 Difference]: Finished difference Result 433 states and 434 transitions. [2018-07-25 08:48:43,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:48:43,857 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 424 [2018-07-25 08:48:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:43,858 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:48:43,858 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:48:43,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17443, Invalid=28997, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:48:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:48:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2018-07-25 08:48:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:48:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 08:48:44,061 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 08:48:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:44,061 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 08:48:44,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:48:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 08:48:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:48:44,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:44,062 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 08:48:44,063 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash -18845265, now seen corresponding path program 209 times [2018-07-25 08:48:44,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:44,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:44,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:48:44,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:48:44,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:48:44,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:48:44,970 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 214 states. [2018-07-25 08:48:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:47,858 INFO L93 Difference]: Finished difference Result 644 states and 646 transitions. [2018-07-25 08:48:47,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:48:47,858 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 08:48:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:47,859 INFO L225 Difference]: With dead ends: 644 [2018-07-25 08:48:47,859 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:48:47,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 08:48:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:48:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:48:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:48:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 08:48:48,061 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 08:48:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:48,062 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 08:48:48,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:48:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 08:48:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:48:48,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:48,063 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-25 08:48:48,063 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:48,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1395430423, now seen corresponding path program 210 times [2018-07-25 08:48:48,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:48,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:48,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:48:48,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:48:48,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:48:48,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:48:48,669 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-25 08:48:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:49,397 INFO L93 Difference]: Finished difference Result 437 states and 438 transitions. [2018-07-25 08:48:49,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:48:49,397 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-25 08:48:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:49,398 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:48:49,398 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:48:49,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:48:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:48:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2018-07-25 08:48:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:48:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 08:48:49,605 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-25 08:48:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:49,606 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 08:48:49,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:48:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 08:48:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:48:49,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:49,607 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-07-25 08:48:49,607 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:49,607 INFO L82 PathProgramCache]: Analyzing trace with hash -978906907, now seen corresponding path program 211 times [2018-07-25 08:48:49,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 11342 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:50,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:50,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:48:50,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:48:50,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:48:50,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:48:50,656 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 216 states. [2018-07-25 08:48:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:52,394 INFO L93 Difference]: Finished difference Result 650 states and 652 transitions. [2018-07-25 08:48:52,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:48:52,394 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 08:48:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:52,395 INFO L225 Difference]: With dead ends: 650 [2018-07-25 08:48:52,395 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:48:52,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23541, Invalid=80465, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 08:48:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:48:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:48:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:48:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-25 08:48:52,604 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 430 [2018-07-25 08:48:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:52,604 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-25 08:48:52,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:48:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-25 08:48:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:48:52,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:52,606 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 106, 1, 1, 1, 1] [2018-07-25 08:48:52,606 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -255959521, now seen corresponding path program 212 times [2018-07-25 08:48:52,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22898 backedges. 11556 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:53,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:53,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:48:53,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:48:53,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:48:53,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:48:53,206 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 112 states. [2018-07-25 08:48:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:53,930 INFO L93 Difference]: Finished difference Result 441 states and 442 transitions. [2018-07-25 08:48:53,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:48:53,930 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 432 [2018-07-25 08:48:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:53,931 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:48:53,931 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:48:53,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11664 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:48:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:48:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2018-07-25 08:48:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:48:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 08:48:54,144 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-25 08:48:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:54,144 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 08:48:54,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:48:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 08:48:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:48:54,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:54,145 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-25 08:48:54,146 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:54,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1164030565, now seen corresponding path program 213 times [2018-07-25 08:48:54,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 11556 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:55,149 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:55,149 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:48:55,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:48:55,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:48:55,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11989, Invalid=35317, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:48:55,153 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 218 states. [2018-07-25 08:48:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:57,649 INFO L93 Difference]: Finished difference Result 656 states and 658 transitions. [2018-07-25 08:48:57,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:48:57,649 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-25 08:48:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:57,650 INFO L225 Difference]: With dead ends: 656 [2018-07-25 08:48:57,650 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:48:57,656 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17227 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23977, Invalid=81973, Unknown=0, NotChecked=0, Total=105950 [2018-07-25 08:48:57,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:48:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:48:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:48:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-25 08:48:57,871 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-25 08:48:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:57,871 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-25 08:48:57,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:48:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-25 08:48:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:48:57,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:57,872 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 108, 107, 1, 1, 1, 1] [2018-07-25 08:48:57,872 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1032294955, now seen corresponding path program 214 times [2018-07-25 08:48:57,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 23328 backedges. 11772 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:58,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:58,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:48:58,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:48:58,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:48:58,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:48:58,530 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 113 states. [2018-07-25 08:48:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:59,354 INFO L93 Difference]: Finished difference Result 445 states and 446 transitions. [2018-07-25 08:48:59,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:48:59,354 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 436 [2018-07-25 08:48:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:59,355 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:48:59,355 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 08:48:59,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11881 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18427, Invalid=30635, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:48:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 08:48:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2018-07-25 08:48:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:48:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-07-25 08:48:59,570 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 436 [2018-07-25 08:48:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:59,570 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-07-25 08:48:59,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:48:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-07-25 08:48:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:48:59,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:59,572 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 108, 108, 1, 1, 1, 1] [2018-07-25 08:48:59,572 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 101926865, now seen corresponding path program 215 times [2018-07-25 08:48:59,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11772 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:00,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:00,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:49:00,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:49:00,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:49:00,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:49:00,644 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 220 states. [2018-07-25 08:49:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:03,429 INFO L93 Difference]: Finished difference Result 662 states and 664 transitions. [2018-07-25 08:49:03,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:49:03,429 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-25 08:49:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:03,430 INFO L225 Difference]: With dead ends: 662 [2018-07-25 08:49:03,430 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:49:03,435 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 08:49:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:49:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:49:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:49:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-25 08:49:03,713 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 438 [2018-07-25 08:49:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:03,713 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-25 08:49:03,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:49:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-25 08:49:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:49:03,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:03,714 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 109, 108, 1, 1, 1, 1] [2018-07-25 08:49:03,714 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:03,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1460583179, now seen corresponding path program 216 times [2018-07-25 08:49:03,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23762 backedges. 11990 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:04,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:04,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:49:04,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:49:04,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:49:04,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:49:04,367 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 114 states. [2018-07-25 08:49:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:05,173 INFO L93 Difference]: Finished difference Result 449 states and 450 transitions. [2018-07-25 08:49:05,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:49:05,173 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 440 [2018-07-25 08:49:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:05,174 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:49:05,174 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:49:05,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:49:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:49:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2018-07-25 08:49:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 08:49:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-25 08:49:05,393 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 440 [2018-07-25 08:49:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:05,393 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-25 08:49:05,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:49:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-25 08:49:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 08:49:05,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:05,395 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-07-25 08:49:05,395 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:05,395 INFO L82 PathProgramCache]: Analyzing trace with hash -833937529, now seen corresponding path program 217 times [2018-07-25 08:49:05,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11990 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:06,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:06,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:49:06,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:49:06,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:49:06,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12431, Invalid=36631, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:49:06,488 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 222 states. [2018-07-25 08:49:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:11,389 INFO L93 Difference]: Finished difference Result 668 states and 670 transitions. [2018-07-25 08:49:11,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:49:11,389 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-07-25 08:49:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:11,390 INFO L225 Difference]: With dead ends: 668 [2018-07-25 08:49:11,390 INFO L226 Difference]: Without dead ends: 445 [2018-07-25 08:49:11,397 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 08:49:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-25 08:49:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-25 08:49:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-25 08:49:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 446 transitions. [2018-07-25 08:49:11,645 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 446 transitions. Word has length 442 [2018-07-25 08:49:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:11,645 INFO L472 AbstractCegarLoop]: Abstraction has 445 states and 446 transitions. [2018-07-25 08:49:11,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:49:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 446 transitions. [2018-07-25 08:49:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-25 08:49:11,647 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:11,647 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 110, 109, 1, 1, 1, 1] [2018-07-25 08:49:11,647 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2121898559, now seen corresponding path program 218 times [2018-07-25 08:49:11,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 24200 backedges. 12210 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:12,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:12,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:49:12,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:49:12,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:49:12,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:49:12,464 INFO L87 Difference]: Start difference. First operand 445 states and 446 transitions. Second operand 115 states. [2018-07-25 08:49:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:13,371 INFO L93 Difference]: Finished difference Result 453 states and 454 transitions. [2018-07-25 08:49:13,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:49:13,371 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 444 [2018-07-25 08:49:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:13,372 INFO L225 Difference]: With dead ends: 453 [2018-07-25 08:49:13,372 INFO L226 Difference]: Without dead ends: 451 [2018-07-25 08:49:13,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:49:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-25 08:49:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 447. [2018-07-25 08:49:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 08:49:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 448 transitions. [2018-07-25 08:49:13,600 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 448 transitions. Word has length 444 [2018-07-25 08:49:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:13,600 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 448 transitions. [2018-07-25 08:49:13,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:49:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 448 transitions. [2018-07-25 08:49:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-25 08:49:13,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:13,602 INFO L354 BasicCegarLoop]: trace histogram [111, 111, 110, 110, 1, 1, 1, 1] [2018-07-25 08:49:13,602 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:13,602 INFO L82 PathProgramCache]: Analyzing trace with hash 964883645, now seen corresponding path program 219 times [2018-07-25 08:49:13,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 24420 backedges. 12210 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:14,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:14,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:49:14,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:49:14,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:49:14,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12655, Invalid=37297, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:49:14,762 INFO L87 Difference]: Start difference. First operand 447 states and 448 transitions. Second operand 224 states. [2018-07-25 08:49:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:17,666 INFO L93 Difference]: Finished difference Result 674 states and 676 transitions. [2018-07-25 08:49:17,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:49:17,667 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 446 [2018-07-25 08:49:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:17,668 INFO L225 Difference]: With dead ends: 674 [2018-07-25 08:49:17,668 INFO L226 Difference]: Without dead ends: 449 [2018-07-25 08:49:17,674 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 08:49:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-25 08:49:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-25 08:49:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 08:49:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2018-07-25 08:49:17,912 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 446 [2018-07-25 08:49:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:17,912 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2018-07-25 08:49:17,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:49:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2018-07-25 08:49:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 08:49:17,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:17,914 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 111, 110, 1, 1, 1, 1] [2018-07-25 08:49:17,914 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1260614153, now seen corresponding path program 220 times [2018-07-25 08:49:17,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 24642 backedges. 12432 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:18,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:18,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:49:18,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:49:18,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:49:18,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:49:18,732 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand 116 states. [2018-07-25 08:49:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:19,579 INFO L93 Difference]: Finished difference Result 457 states and 458 transitions. [2018-07-25 08:49:19,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:49:19,579 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 448 [2018-07-25 08:49:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:19,580 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:49:19,580 INFO L226 Difference]: Without dead ends: 455 [2018-07-25 08:49:19,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12544 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19438, Invalid=32318, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:49:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-25 08:49:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 451. [2018-07-25 08:49:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-25 08:49:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-07-25 08:49:19,806 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 448 [2018-07-25 08:49:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:19,806 INFO L472 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-07-25 08:49:19,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:49:19,806 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-07-25 08:49:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-25 08:49:19,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:19,808 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 111, 111, 1, 1, 1, 1] [2018-07-25 08:49:19,808 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash -269490317, now seen corresponding path program 221 times [2018-07-25 08:49:19,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 12432 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:20,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:20,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:49:20,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:49:20,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:49:20,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12881, Invalid=37969, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:49:20,960 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 226 states. [2018-07-25 08:49:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:25,189 INFO L93 Difference]: Finished difference Result 680 states and 682 transitions. [2018-07-25 08:49:25,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:49:25,189 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 450 [2018-07-25 08:49:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:25,190 INFO L225 Difference]: With dead ends: 680 [2018-07-25 08:49:25,190 INFO L226 Difference]: Without dead ends: 453 [2018-07-25 08:49:25,194 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 08:49:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-25 08:49:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-25 08:49:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-25 08:49:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 454 transitions. [2018-07-25 08:49:25,477 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 454 transitions. Word has length 450 [2018-07-25 08:49:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:25,477 INFO L472 AbstractCegarLoop]: Abstraction has 453 states and 454 transitions. [2018-07-25 08:49:25,477 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:49:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 454 transitions. [2018-07-25 08:49:25,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-25 08:49:25,478 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:25,479 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 112, 111, 1, 1, 1, 1] [2018-07-25 08:49:25,479 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:25,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2046405715, now seen corresponding path program 222 times [2018-07-25 08:49:25,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:49:25,842 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:49:25,849 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:49:25,850 INFO L202 PluginConnector]: Adding new model down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:25 BoogieIcfgContainer [2018-07-25 08:49:25,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:25,851 INFO L168 Benchmark]: Toolchain (without parser) took 253882.58 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -609.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:25,852 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:25,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:25,853 INFO L168 Benchmark]: Boogie Preprocessor took 21.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:25,853 INFO L168 Benchmark]: RCFGBuilder took 213.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:25,854 INFO L168 Benchmark]: TraceAbstraction took 253601.55 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -619.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:25,856 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 213.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253601.55 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -619.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while BasicCegarLoop was analyzing trace of length 453 with TraceHistMax 113, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 253.5s OverallTime, 224 OverallIterations, 113 TraceHistogramMax, 155.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7221 SDtfs, 3357 SDslu, 33661 SDs, 0 SdLazy, 451227 SolverSat, 23377 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38187 GetRequests, 6328 SyntacticMatches, 0 SemanticMatches, 31859 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170789 ImplicationChecksByTransitivity, 82.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=223, 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: 20.1s AutomataMinimizationTime, 223 MinimizatonAttempts, 444 StatesRemovedByMinimization, 111 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 12.8s SatisfiabilityAnalysisTime, 53.0s InterpolantComputationTime, 50844 NumberOfCodeBlocks, 50844 NumberOfCodeBlocksAsserted, 223 NumberOfCheckSat, 50621 ConstructedInterpolants, 0 QuantifiedInterpolants, 45636865 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 223 InterpolantComputations, 2 PerfectInterpolantSequences, 936544/1860656 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.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-25-867.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-25-867.csv Completed graceful shutdown