java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:24:18,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:24:18,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:24:18,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:24:18,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:24:18,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:24:18,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:24:18,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:24:18,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:24:18,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:24:18,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:24:18,792 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:24:18,792 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:24:18,793 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:24:18,794 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:24:18,795 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:24:18,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:24:18,799 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:24:18,799 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:24:18,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 15:24:18,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:24:18,829 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:24:18,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:24:18,831 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:24:18,831 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:24:18,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:24:18,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:24:18,831 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:24:18,832 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:24:18,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:24:18,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:24:18,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:24:18,920 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:24:18,921 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:24:18,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl [2018-07-23 15:24:18,923 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl' [2018-07-23 15:24:19,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:24:19,002 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:24:19,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:24:19,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:24:19,003 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:24:19,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:24:19,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:24:19,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:24:19,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:24:19,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/1) ... [2018-07-23 15:24:19,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:24:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:24:19,328 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:24:19,329 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:24:19 BoogieIcfgContainer [2018-07-23 15:24:19,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:24:19,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:24:19,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:24:19,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:24:19,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:24:18" (1/2) ... [2018-07-23 15:24:19,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd9c32a and model type fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:24:19, skipping insertion in model container [2018-07-23 15:24:19,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:24:19" (2/2) ... [2018-07-23 15:24:19,338 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bpl [2018-07-23 15:24:19,348 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:24:19,356 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:24:19,398 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:24:19,399 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:24:19,399 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:24:19,399 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:24:19,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:24:19,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:24:19,399 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:24:19,400 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:24:19,400 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:24:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-23 15:24:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:24:19,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,422 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:24:19,423 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,428 INFO L82 PathProgramCache]: Analyzing trace with hash 889599113, now seen corresponding path program 1 times [2018-07-23 15:24:19,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:19,517 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:24:19,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:24:19,522 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:24:19,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:24:19,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:24:19,540 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-23 15:24:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,589 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2018-07-23 15:24:19,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:24:19,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:24:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,603 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:24:19,603 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:24:19,607 INFO L573 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 [2018-07-23 15:24:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:24:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-23 15:24:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:24:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-23 15:24:19,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-23 15:24:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,648 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-23 15:24:19,648 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:24:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-23 15:24:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:24:19,649 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,650 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:24:19,650 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash 206308035, now seen corresponding path program 1 times [2018-07-23 15:24:19,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:19,682 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:24:19,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:24:19,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:24:19,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:24:19,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:24:19,686 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-07-23 15:24:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,715 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-23 15:24:19,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:24:19,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 15:24:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,716 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:24:19,716 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:24:19,717 INFO L573 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 [2018-07-23 15:24:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:24:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:24:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:24:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 15:24:19,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-23 15:24:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,722 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 15:24:19,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:24:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 15:24:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:24:19,723 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,723 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:24:19,723 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1531170369, now seen corresponding path program 1 times [2018-07-23 15:24:19,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:19,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:19,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:24:19,789 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:24:19,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:24:19,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:24:19,790 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-23 15:24:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,879 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-23 15:24:19,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:24:19,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-23 15:24:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,881 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:24:19,881 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:24:19,881 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:24:19,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:24:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:24:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:24:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-23 15:24:19,886 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-23 15:24:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,887 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-23 15:24:19,887 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:24:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-23 15:24:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:24:19,888 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,888 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-23 15:24:19,888 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1719110265, now seen corresponding path program 2 times [2018-07-23 15:24:19,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:19,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:19,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:24:19,930 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:24:19,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:24:19,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:24:19,931 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-07-23 15:24:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,959 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-23 15:24:19,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:24:19,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-23 15:24:19,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,964 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:24:19,964 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:24:19,965 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:24:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:24:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:24:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:24:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-23 15:24:19,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-23 15:24:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,975 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-23 15:24:19,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:24:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-23 15:24:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:24:19,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,976 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-23 15:24:19,976 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash -587211915, now seen corresponding path program 3 times [2018-07-23 15:24:19,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:24:20,029 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:24:20,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:24:20,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:24:20,030 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-07-23 15:24:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,096 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-07-23 15:24:20,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:24:20,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-23 15:24:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,100 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:24:20,100 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:24:20,100 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:24:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:24:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:24:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:24:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-23 15:24:20,111 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-23 15:24:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,111 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-23 15:24:20,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:24:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-23 15:24:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:24:20,112 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,113 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-23 15:24:20,113 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1669882193, now seen corresponding path program 4 times [2018-07-23 15:24:20,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:24:20,178 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:24:20,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:24:20,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:24:20,179 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-23 15:24:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,232 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-23 15:24:20,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:24:20,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:24:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,236 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:24:20,236 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:24:20,237 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:24:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:24:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:24:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:24:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-23 15:24:20,249 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-23 15:24:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,250 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-23 15:24:20,250 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:24:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-23 15:24:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:24:20,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,254 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-23 15:24:20,256 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash 70717867, now seen corresponding path program 5 times [2018-07-23 15:24:20,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:24:20,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:24:20,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:24:20,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:24:20,351 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-23 15:24:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,427 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-07-23 15:24:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:24:20,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:24:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,428 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:24:20,429 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:24:20,432 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:24:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:24:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:24:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:24:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-23 15:24:20,445 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-23 15:24:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,446 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-23 15:24:20,446 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:24:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-23 15:24:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:24:20,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,447 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-23 15:24:20,447 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2045097383, now seen corresponding path program 6 times [2018-07-23 15:24:20,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:24:20,494 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:24:20,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:24:20,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:24:20,495 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-23 15:24:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,582 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-23 15:24:20,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:24:20,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-23 15:24:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,584 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:24:20,584 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:24:20,585 INFO L573 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 [2018-07-23 15:24:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:24:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:24:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:24:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-23 15:24:20,592 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2018-07-23 15:24:20,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,592 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-23 15:24:20,592 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:24:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-23 15:24:20,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:24:20,594 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,594 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-23 15:24:20,594 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,594 INFO L82 PathProgramCache]: Analyzing trace with hash 37022875, now seen corresponding path program 7 times [2018-07-23 15:24:20,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:24:20,645 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:24:20,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:24:20,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:24:20,649 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2018-07-23 15:24:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,696 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-23 15:24:20,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:24:20,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-07-23 15:24:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,698 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:24:20,698 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:24:20,699 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:24:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:24:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:24:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:24:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-23 15:24:20,708 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-23 15:24:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,708 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-23 15:24:20,709 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:24:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-23 15:24:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:24:20,710 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,710 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-23 15:24:20,710 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1480612969, now seen corresponding path program 8 times [2018-07-23 15:24:20,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:24:20,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:24:20,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:24:20,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:24:20,767 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 13 states. [2018-07-23 15:24:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,812 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-23 15:24:20,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:24:20,813 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-07-23 15:24:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,817 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:24:20,817 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:24:20,818 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:24:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:24:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:24:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:24:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-23 15:24:20,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-23 15:24:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,826 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-23 15:24:20,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:24:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-23 15:24:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:24:20,828 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,829 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-23 15:24:20,831 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash 360221587, now seen corresponding path program 9 times [2018-07-23 15:24:20,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:24:20,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:24:20,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:24:20,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:24:20,902 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-23 15:24:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,958 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-23 15:24:20,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:24:20,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-23 15:24:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,959 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:24:20,959 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:24:20,960 INFO L573 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 [2018-07-23 15:24:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:24:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:24:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:24:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-23 15:24:20,967 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2018-07-23 15:24:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,968 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-23 15:24:20,968 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:24:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-23 15:24:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:24:20,969 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,969 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-23 15:24:20,969 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1263725703, now seen corresponding path program 10 times [2018-07-23 15:24:20,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:24:21,044 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:24:21,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:24:21,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:24:21,045 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2018-07-23 15:24:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,112 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-23 15:24:21,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:24:21,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-07-23 15:24:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,114 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:24:21,114 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:24:21,117 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:24:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:24:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:24:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:24:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-23 15:24:21,128 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-23 15:24:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,129 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-23 15:24:21,129 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:24:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-23 15:24:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:24:21,130 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,132 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-23 15:24:21,133 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1629808515, now seen corresponding path program 11 times [2018-07-23 15:24:21,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:24:21,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:24:21,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:24:21,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:24:21,230 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 17 states. [2018-07-23 15:24:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,304 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-07-23 15:24:21,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:24:21,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-07-23 15:24:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,306 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:24:21,306 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:24:21,307 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:24:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:24:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:24:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:24:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-23 15:24:21,322 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-23 15:24:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,322 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-23 15:24:21,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:24:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-23 15:24:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:24:21,324 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,324 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-23 15:24:21,325 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1248072575, now seen corresponding path program 12 times [2018-07-23 15:24:21,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:24:21,413 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:24:21,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:24:21,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:24:21,415 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-23 15:24:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,496 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-23 15:24:21,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:24:21,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-23 15:24:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,497 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:24:21,498 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:24:21,504 INFO L573 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 [2018-07-23 15:24:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:24:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:24:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:24:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-23 15:24:21,516 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 36 [2018-07-23 15:24:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,517 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-23 15:24:21,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:24:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-23 15:24:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:24:21,518 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,518 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-23 15:24:21,519 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1910464909, now seen corresponding path program 13 times [2018-07-23 15:24:21,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:24:21,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:24:21,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:24:21,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:24:21,621 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2018-07-23 15:24:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,695 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-23 15:24:21,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:24:21,696 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2018-07-23 15:24:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,697 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:24:21,697 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:24:21,698 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:24:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:24:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:24:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:24:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-23 15:24:21,713 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-23 15:24:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,715 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-23 15:24:21,715 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:24:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-23 15:24:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:24:21,716 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,716 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-23 15:24:21,717 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,717 INFO L82 PathProgramCache]: Analyzing trace with hash 179690863, now seen corresponding path program 14 times [2018-07-23 15:24:21,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:24:21,819 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:24:21,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:24:21,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:24:21,820 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 21 states. [2018-07-23 15:24:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,904 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-23 15:24:21,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:24:21,904 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-07-23 15:24:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,905 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:24:21,906 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:24:21,907 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:24:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:24:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:24:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:24:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-23 15:24:21,918 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-23 15:24:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,919 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-23 15:24:21,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:24:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-23 15:24:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:24:21,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,920 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-23 15:24:21,920 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1225306773, now seen corresponding path program 15 times [2018-07-23 15:24:21,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:24:22,021 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:24:22,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:24:22,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:24:22,023 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-23 15:24:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,116 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-23 15:24:22,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:24:22,117 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-23 15:24:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,117 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:24:22,117 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:24:22,118 INFO L573 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 [2018-07-23 15:24:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:24:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:24:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:24:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-23 15:24:22,126 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 44 [2018-07-23 15:24:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,127 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-23 15:24:22,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:24:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-23 15:24:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:24:22,128 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,128 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-23 15:24:22,128 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1452473761, now seen corresponding path program 16 times [2018-07-23 15:24:22,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:24:22,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:24:22,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:24:22,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:24:22,233 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 24 states. [2018-07-23 15:24:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,316 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-23 15:24:22,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:24:22,316 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2018-07-23 15:24:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,317 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:24:22,317 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:24:22,318 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:24:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:24:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:24:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:24:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-23 15:24:22,327 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-23 15:24:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-23 15:24:22,328 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:24:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-23 15:24:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:24:22,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,329 INFO L353 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-23 15:24:22,329 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1195476315, now seen corresponding path program 17 times [2018-07-23 15:24:22,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:24:22,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:24:22,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:24:22,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:24:22,451 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 25 states. [2018-07-23 15:24:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,548 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2018-07-23 15:24:22,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:24:22,549 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-07-23 15:24:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,549 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:24:22,549 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:24:22,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:24:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:24:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:24:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:24:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-23 15:24:22,562 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-23 15:24:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,562 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-23 15:24:22,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:24:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-23 15:24:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:24:22,567 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,567 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-23 15:24:22,568 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1040107177, now seen corresponding path program 18 times [2018-07-23 15:24:22,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:24:22,662 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:24:22,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:24:22,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:24:22,665 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-23 15:24:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,757 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-23 15:24:22,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:24:22,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-23 15:24:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,758 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:24:22,758 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:24:22,759 INFO L573 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 [2018-07-23 15:24:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:24:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:24:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:24:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-23 15:24:22,773 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2018-07-23 15:24:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,774 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-23 15:24:22,774 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:24:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-23 15:24:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:24:22,778 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,778 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-23 15:24:22,778 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash 75962443, now seen corresponding path program 19 times [2018-07-23 15:24:22,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:24:22,911 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:24:22,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:24:22,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:24:22,913 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 28 states. [2018-07-23 15:24:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:23,019 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-23 15:24:23,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:24:23,019 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2018-07-23 15:24:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:23,020 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:24:23,020 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:24:23,022 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=455, Invalid=1105, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:24:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:24:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:24:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:24:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-23 15:24:23,038 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-23 15:24:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:23,038 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-23 15:24:23,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:24:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-23 15:24:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:24:23,039 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:23,039 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-23 15:24:23,040 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:23,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1108795207, now seen corresponding path program 20 times [2018-07-23 15:24:23,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:23,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:23,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:24:23,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:24:23,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:24:23,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:24:23,190 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 29 states. [2018-07-23 15:24:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:23,295 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-23 15:24:23,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:24:23,296 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-07-23 15:24:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:23,297 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:24:23,297 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:24:23,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:24:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:24:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:24:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:24:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-23 15:24:23,318 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-23 15:24:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:23,318 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-23 15:24:23,322 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:24:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-23 15:24:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:24:23,323 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:23,323 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-23 15:24:23,324 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1523636035, now seen corresponding path program 21 times [2018-07-23 15:24:23,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:23,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:23,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:24:23,489 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:24:23,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:24:23,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:24:23,489 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-23 15:24:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:23,572 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-23 15:24:23,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:24:23,572 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-23 15:24:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:23,573 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:24:23,573 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:24:23,574 INFO L573 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 [2018-07-23 15:24:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:24:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:24:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:24:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-23 15:24:23,582 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 60 [2018-07-23 15:24:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:23,582 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-23 15:24:23,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:24:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-23 15:24:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:24:23,583 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:23,583 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-23 15:24:23,583 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:23,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1329455159, now seen corresponding path program 22 times [2018-07-23 15:24:23,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:23,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:23,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:24:23,734 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:24:23,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:24:23,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:24:23,736 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 32 states. [2018-07-23 15:24:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:23,846 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-23 15:24:23,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:24:23,846 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2018-07-23 15:24:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:23,847 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:24:23,847 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:24:23,848 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=600, Invalid=1470, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:24:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:24:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:24:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:24:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-23 15:24:23,859 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-23 15:24:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:23,859 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-23 15:24:23,859 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:24:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-23 15:24:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:24:23,860 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:23,860 INFO L353 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-23 15:24:23,860 INFO L414 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1862593331, now seen corresponding path program 23 times [2018-07-23 15:24:23,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:24,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:24,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:24:24,001 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:24:24,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:24:24,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:24:24,002 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 33 states. [2018-07-23 15:24:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:24,113 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-07-23 15:24:24,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:24:24,114 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-07-23 15:24:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:24,115 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:24:24,115 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:24:24,116 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=663, Invalid=1593, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:24:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:24:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:24:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:24:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-23 15:24:24,124 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-23 15:24:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:24,125 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-23 15:24:24,125 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:24:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-23 15:24:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:24:24,125 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:24,125 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-23 15:24:24,126 INFO L414 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1187698897, now seen corresponding path program 24 times [2018-07-23 15:24:24,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:24,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:24,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:24:24,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:24:24,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:24:24,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:24:24,222 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-23 15:24:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:24,329 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-23 15:24:24,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:24:24,329 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-23 15:24:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:24,330 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:24:24,330 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:24:24,331 INFO L573 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 [2018-07-23 15:24:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:24:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:24:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:24:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-23 15:24:24,339 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 68 [2018-07-23 15:24:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:24,339 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-23 15:24:24,340 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:24:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-23 15:24:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:24:24,340 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:24,340 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-23 15:24:24,341 INFO L414 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1105222179, now seen corresponding path program 25 times [2018-07-23 15:24:24,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:24,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:24,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:24:24,510 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:24:24,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:24:24,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:24:24,512 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 36 states. [2018-07-23 15:24:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:24,617 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-23 15:24:24,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:24:24,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 72 [2018-07-23 15:24:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:24,618 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:24:24,618 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:24:24,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=765, Invalid=1887, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:24:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:24:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:24:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:24:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-23 15:24:24,630 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-23 15:24:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:24,630 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-23 15:24:24,630 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:24:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-23 15:24:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:24:24,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:24,631 INFO L353 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-23 15:24:24,631 INFO L414 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1247455519, now seen corresponding path program 26 times [2018-07-23 15:24:24,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:24,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:24,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:24:24,811 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:24:24,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:24:24,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:24:24,812 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 37 states. [2018-07-23 15:24:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:24,929 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-23 15:24:24,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:24:24,929 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-07-23 15:24:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:24,930 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:24:24,930 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:24:24,932 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=836, Invalid=2026, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:24:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:24:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:24:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:24:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-23 15:24:24,943 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-23 15:24:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:24,943 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-23 15:24:24,943 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:24:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-23 15:24:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:24:24,944 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:24,944 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-23 15:24:24,944 INFO L414 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 494741787, now seen corresponding path program 27 times [2018-07-23 15:24:24,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:25,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:25,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:24:25,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:24:25,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:24:25,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:24:25,071 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-23 15:24:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:25,169 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-23 15:24:25,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:24:25,170 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-23 15:24:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:25,171 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:24:25,171 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:24:25,172 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:24:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:24:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:24:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:24:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-23 15:24:25,181 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 76 [2018-07-23 15:24:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:25,182 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-23 15:24:25,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:24:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-23 15:24:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:24:25,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:25,183 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-23 15:24:25,183 INFO L414 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:25,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1564313103, now seen corresponding path program 28 times [2018-07-23 15:24:25,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:25,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:25,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:24:25,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:24:25,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:24:25,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:24:25,361 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 40 states. [2018-07-23 15:24:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:25,506 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-23 15:24:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:24:25,507 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 80 [2018-07-23 15:24:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:25,508 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:24:25,508 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:24:25,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=950, Invalid=2356, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:24:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:24:25,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:24:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:24:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-23 15:24:25,520 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-23 15:24:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:25,520 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-23 15:24:25,520 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:24:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-23 15:24:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:24:25,521 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:25,522 INFO L353 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-23 15:24:25,522 INFO L414 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash 417798411, now seen corresponding path program 29 times [2018-07-23 15:24:25,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:25,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:25,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:24:25,718 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:24:25,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:24:25,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:24:25,720 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 41 states. [2018-07-23 15:24:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:25,890 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-23 15:24:25,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:24:25,891 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 82 [2018-07-23 15:24:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:25,892 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:24:25,892 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:24:25,894 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1029, Invalid=2511, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:24:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:24:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:24:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:24:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-23 15:24:25,905 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-23 15:24:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:25,905 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-23 15:24:25,905 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:24:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-23 15:24:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:24:25,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:25,907 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-23 15:24:25,907 INFO L414 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1871192825, now seen corresponding path program 30 times [2018-07-23 15:24:25,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:26,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:26,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:24:26,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:24:26,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:24:26,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:24:26,041 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-23 15:24:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:26,166 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-23 15:24:26,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:24:26,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-23 15:24:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:26,167 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:24:26,167 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:24:26,169 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:24:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:24:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:24:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:24:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-23 15:24:26,210 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2018-07-23 15:24:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:26,210 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-23 15:24:26,210 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:24:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-23 15:24:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:24:26,211 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:26,214 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-23 15:24:26,215 INFO L414 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1432067077, now seen corresponding path program 31 times [2018-07-23 15:24:26,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:26,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:26,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:24:26,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:24:26,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:24:26,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:24:26,416 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 44 states. [2018-07-23 15:24:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:26,570 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-23 15:24:26,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:24:26,570 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 88 [2018-07-23 15:24:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:26,571 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:24:26,571 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:24:26,573 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1155, Invalid=2877, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:24:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:24:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:24:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:24:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-23 15:24:26,584 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-23 15:24:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:26,584 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-23 15:24:26,585 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:24:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-23 15:24:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:24:26,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:26,586 INFO L353 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-23 15:24:26,586 INFO L414 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:26,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1476838665, now seen corresponding path program 32 times [2018-07-23 15:24:26,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:26,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:26,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:24:26,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:24:26,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:24:26,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:24:26,792 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 45 states. [2018-07-23 15:24:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:26,963 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-23 15:24:26,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:24:26,963 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 90 [2018-07-23 15:24:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:26,964 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:24:26,964 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:24:26,966 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1242, Invalid=3048, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:24:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:24:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:24:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:24:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-23 15:24:26,977 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-23 15:24:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:26,977 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-23 15:24:26,978 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:24:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-23 15:24:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:24:26,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:26,979 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-23 15:24:26,979 INFO L414 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:26,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1552661773, now seen corresponding path program 33 times [2018-07-23 15:24:26,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:27,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:27,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:24:27,109 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:24:27,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:24:27,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:24:27,110 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-23 15:24:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:27,225 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-23 15:24:27,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:24:27,225 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-23 15:24:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:27,226 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:24:27,226 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:24:27,227 INFO L573 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 [2018-07-23 15:24:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:24:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:24:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:24:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-23 15:24:27,239 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 92 [2018-07-23 15:24:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:27,239 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-23 15:24:27,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:24:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-23 15:24:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:24:27,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:27,241 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-23 15:24:27,241 INFO L414 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:27,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2078536679, now seen corresponding path program 34 times [2018-07-23 15:24:27,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:27,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:27,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:24:27,466 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:24:27,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:24:27,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:24:27,467 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 48 states. [2018-07-23 15:24:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:27,649 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-23 15:24:27,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:24:27,650 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 96 [2018-07-23 15:24:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:27,651 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:24:27,651 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:24:27,652 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1380, Invalid=3450, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:24:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:24:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:24:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:24:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-23 15:24:27,662 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-23 15:24:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:27,663 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-23 15:24:27,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:24:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-23 15:24:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:24:27,664 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:27,664 INFO L353 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-23 15:24:27,664 INFO L414 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:27,664 INFO L82 PathProgramCache]: Analyzing trace with hash 224399075, now seen corresponding path program 35 times [2018-07-23 15:24:27,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:27,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:27,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:24:27,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:24:27,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:24:27,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:24:27,888 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 49 states. [2018-07-23 15:24:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:28,074 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2018-07-23 15:24:28,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:24:28,074 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 98 [2018-07-23 15:24:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:28,075 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:24:28,076 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:24:28,077 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1475, Invalid=3637, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:24:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:24:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:24:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:24:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-23 15:24:28,088 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-23 15:24:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:28,088 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-23 15:24:28,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:24:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-23 15:24:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:24:28,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:28,090 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-23 15:24:28,090 INFO L414 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash 809589471, now seen corresponding path program 36 times [2018-07-23 15:24:28,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:28,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:28,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:24:28,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:24:28,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:24:28,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:24:28,230 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-23 15:24:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:28,355 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-23 15:24:28,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:24:28,355 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-23 15:24:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:28,356 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:24:28,356 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:24:28,357 INFO L573 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 [2018-07-23 15:24:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:24:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:24:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:24:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-23 15:24:28,372 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2018-07-23 15:24:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:28,372 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-23 15:24:28,372 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:24:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-23 15:24:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:24:28,373 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:28,373 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-23 15:24:28,373 INFO L414 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:28,374 INFO L82 PathProgramCache]: Analyzing trace with hash 726349267, now seen corresponding path program 37 times [2018-07-23 15:24:28,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:28,640 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:28,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:24:28,641 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:24:28,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:24:28,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:24:28,643 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 52 states. [2018-07-23 15:24:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:28,866 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-23 15:24:28,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:24:28,866 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 104 [2018-07-23 15:24:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:28,867 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:24:28,868 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:24:28,869 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1625, Invalid=4075, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:24:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:24:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:24:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:24:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-23 15:24:28,884 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-23 15:24:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:28,884 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-23 15:24:28,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:24:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-23 15:24:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:24:28,886 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:28,886 INFO L353 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-23 15:24:28,886 INFO L414 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1735038159, now seen corresponding path program 38 times [2018-07-23 15:24:28,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:29,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:29,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:24:29,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:24:29,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:24:29,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:24:29,201 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 53 states. [2018-07-23 15:24:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:29,418 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-23 15:24:29,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:24:29,419 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 106 [2018-07-23 15:24:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:29,420 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:24:29,420 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:24:29,422 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1728, Invalid=4278, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:24:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:24:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:24:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:24:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-23 15:24:29,435 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-23 15:24:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:29,435 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-23 15:24:29,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:24:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-23 15:24:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:24:29,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:29,437 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-23 15:24:29,437 INFO L414 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 422454475, now seen corresponding path program 39 times [2018-07-23 15:24:29,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:29,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:29,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:24:29,589 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:24:29,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:24:29,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:24:29,590 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-23 15:24:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:29,727 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-23 15:24:29,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:24:29,727 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-23 15:24:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:29,728 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:24:29,728 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:24:29,729 INFO L573 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 [2018-07-23 15:24:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:24:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:24:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:24:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-23 15:24:29,742 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 108 [2018-07-23 15:24:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:29,742 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-23 15:24:29,742 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:24:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-23 15:24:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:24:29,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:29,743 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-23 15:24:29,744 INFO L414 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -609670721, now seen corresponding path program 40 times [2018-07-23 15:24:29,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:29,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:29,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:24:29,991 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:24:29,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:24:29,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:24:29,993 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 56 states. [2018-07-23 15:24:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:30,211 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-23 15:24:30,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:24:30,212 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 112 [2018-07-23 15:24:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:30,213 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:24:30,213 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:24:30,216 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1890, Invalid=4752, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:24:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:24:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:24:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:24:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-23 15:24:30,230 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-23 15:24:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:30,230 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-23 15:24:30,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:24:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-23 15:24:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:24:30,231 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:30,231 INFO L353 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-23 15:24:30,232 INFO L414 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:30,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1662530373, now seen corresponding path program 41 times [2018-07-23 15:24:30,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:30,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:30,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:24:30,479 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:24:30,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:24:30,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:24:30,480 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 57 states. [2018-07-23 15:24:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:30,695 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2018-07-23 15:24:30,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:24:30,695 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 114 [2018-07-23 15:24:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:30,696 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:24:30,696 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:24:30,698 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2001, Invalid=4971, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:24:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:24:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:24:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:24:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-23 15:24:30,714 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-23 15:24:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:30,714 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-23 15:24:30,714 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:24:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-23 15:24:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:24:30,715 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:30,715 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-23 15:24:30,716 INFO L414 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash 151625911, now seen corresponding path program 42 times [2018-07-23 15:24:30,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:30,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:30,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:24:30,857 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:24:30,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:24:30,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:24:30,858 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-23 15:24:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:30,984 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-23 15:24:30,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:24:30,985 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-23 15:24:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:30,986 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:24:30,986 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:24:30,987 INFO L573 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 [2018-07-23 15:24:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:24:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:24:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:24:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-23 15:24:31,001 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 116 [2018-07-23 15:24:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:31,002 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-23 15:24:31,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:24:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-23 15:24:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:24:31,003 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:31,003 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-23 15:24:31,003 INFO L414 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash 944557995, now seen corresponding path program 43 times [2018-07-23 15:24:31,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:31,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:31,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:24:31,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:24:31,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:24:31,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:24:31,253 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 60 states. [2018-07-23 15:24:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:31,471 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-23 15:24:31,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:24:31,471 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 120 [2018-07-23 15:24:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:31,472 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:24:31,472 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:24:31,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2175, Invalid=5481, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:24:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:24:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:24:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:24:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-23 15:24:31,487 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-23 15:24:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:31,488 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-23 15:24:31,488 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:24:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-23 15:24:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:24:31,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:31,489 INFO L353 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-23 15:24:31,489 INFO L414 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash 489076391, now seen corresponding path program 44 times [2018-07-23 15:24:31,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:31,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:31,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:24:31,776 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:24:31,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:24:31,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:24:31,777 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 61 states. [2018-07-23 15:24:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:32,045 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-23 15:24:32,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:24:32,046 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 122 [2018-07-23 15:24:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:32,047 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:24:32,047 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:24:32,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2294, Invalid=5716, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:24:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:24:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:24:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:24:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-23 15:24:32,065 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-23 15:24:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:32,066 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-23 15:24:32,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:24:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-23 15:24:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:24:32,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:32,067 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-23 15:24:32,068 INFO L414 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:32,068 INFO L82 PathProgramCache]: Analyzing trace with hash 857919139, now seen corresponding path program 45 times [2018-07-23 15:24:32,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:32,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:32,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:24:32,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:24:32,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:24:32,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:24:32,264 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-23 15:24:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:32,403 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-23 15:24:32,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:24:32,403 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-23 15:24:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:32,404 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:24:32,404 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:24:32,405 INFO L573 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 [2018-07-23 15:24:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:24:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:24:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:24:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-23 15:24:32,419 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 124 [2018-07-23 15:24:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:32,420 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-23 15:24:32,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:24:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-23 15:24:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:24:32,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:32,421 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-23 15:24:32,421 INFO L414 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash 889530263, now seen corresponding path program 46 times [2018-07-23 15:24:32,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:32,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:32,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:24:32,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:24:32,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:24:32,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:24:32,679 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 64 states. [2018-07-23 15:24:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:32,914 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-23 15:24:32,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:24:32,915 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 128 [2018-07-23 15:24:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:32,916 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:24:32,916 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:24:32,918 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2480, Invalid=6262, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:24:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:24:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:24:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:24:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-23 15:24:32,933 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-23 15:24:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:32,933 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-23 15:24:32,933 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:24:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-23 15:24:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:24:32,935 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:32,935 INFO L353 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-23 15:24:32,935 INFO L414 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:32,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1611246957, now seen corresponding path program 47 times [2018-07-23 15:24:32,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:33,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:33,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:24:33,203 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:24:33,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:24:33,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:24:33,204 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 65 states. [2018-07-23 15:24:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:33,478 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions. [2018-07-23 15:24:33,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:24:33,478 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 130 [2018-07-23 15:24:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:33,480 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:24:33,480 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:24:33,481 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2607, Invalid=6513, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:24:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:24:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:24:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:24:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-23 15:24:33,498 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-23 15:24:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:33,498 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-23 15:24:33,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:24:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-23 15:24:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:24:33,501 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:33,501 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-23 15:24:33,501 INFO L414 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash 323530383, now seen corresponding path program 48 times [2018-07-23 15:24:33,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:33,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:33,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:24:33,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:24:33,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:24:33,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:24:33,681 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-23 15:24:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:33,831 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-23 15:24:33,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:24:33,831 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-23 15:24:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:33,832 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:24:33,832 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:24:33,833 INFO L573 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 [2018-07-23 15:24:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:24:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:24:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:24:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-23 15:24:33,850 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 132 [2018-07-23 15:24:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:33,850 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-23 15:24:33,850 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:24:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-23 15:24:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:24:33,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:33,852 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-23 15:24:33,852 INFO L414 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:33,852 INFO L82 PathProgramCache]: Analyzing trace with hash -836685437, now seen corresponding path program 49 times [2018-07-23 15:24:33,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:34,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:34,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:24:34,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:24:34,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:24:34,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:24:34,138 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 68 states. [2018-07-23 15:24:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:34,414 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-23 15:24:34,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:24:34,414 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 136 [2018-07-23 15:24:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:34,415 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:24:34,415 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:24:34,417 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2805, Invalid=7095, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:24:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:24:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:24:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:24:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-23 15:24:34,433 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-23 15:24:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:34,433 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-23 15:24:34,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:24:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-23 15:24:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:24:34,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:34,435 INFO L353 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-23 15:24:34,435 INFO L414 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash -442130305, now seen corresponding path program 50 times [2018-07-23 15:24:34,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:34,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:34,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:24:34,776 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:24:34,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:24:34,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:24:34,777 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 69 states. [2018-07-23 15:24:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:35,048 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-23 15:24:35,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:24:35,048 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 138 [2018-07-23 15:24:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:35,049 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:24:35,050 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:24:35,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2940, Invalid=7362, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:24:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:24:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:24:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:24:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-23 15:24:35,067 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-23 15:24:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:35,068 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-23 15:24:35,068 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:24:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-23 15:24:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:24:35,069 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:35,069 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-23 15:24:35,069 INFO L414 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:35,070 INFO L82 PathProgramCache]: Analyzing trace with hash 768229499, now seen corresponding path program 51 times [2018-07-23 15:24:35,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:35,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:35,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:24:35,235 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:24:35,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:24:35,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:24:35,236 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-23 15:24:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:35,391 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-23 15:24:35,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:24:35,392 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-23 15:24:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:35,393 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:24:35,393 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:24:35,394 INFO L573 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 [2018-07-23 15:24:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:24:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:24:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:24:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-23 15:24:35,409 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 140 [2018-07-23 15:24:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:35,410 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-23 15:24:35,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:24:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-23 15:24:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:24:35,411 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:35,412 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-23 15:24:35,412 INFO L414 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash -932188817, now seen corresponding path program 52 times [2018-07-23 15:24:35,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:35,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:35,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:24:35,705 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:24:35,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:24:35,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:24:35,706 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 72 states. [2018-07-23 15:24:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:35,981 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-23 15:24:35,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:24:35,981 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 144 [2018-07-23 15:24:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:35,982 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:24:35,983 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:24:35,984 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3150, Invalid=7980, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:24:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:24:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:24:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:24:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-23 15:24:36,000 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-23 15:24:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:36,000 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-23 15:24:36,000 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:24:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-23 15:24:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:24:36,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:36,002 INFO L353 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-23 15:24:36,002 INFO L414 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1996726379, now seen corresponding path program 53 times [2018-07-23 15:24:36,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:36,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:36,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:24:36,309 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:24:36,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:24:36,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:24:36,311 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 73 states. [2018-07-23 15:24:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:36,600 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2018-07-23 15:24:36,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:24:36,600 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 146 [2018-07-23 15:24:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:36,601 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:24:36,602 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:24:36,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3293, Invalid=8263, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:24:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:24:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:24:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:24:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-23 15:24:36,618 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-23 15:24:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:36,618 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-23 15:24:36,618 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:24:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-23 15:24:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:24:36,620 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:36,620 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-23 15:24:36,620 INFO L414 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash -814316441, now seen corresponding path program 54 times [2018-07-23 15:24:36,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:36,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:36,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:24:36,800 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:24:36,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:24:36,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:24:36,801 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-23 15:24:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:36,955 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-23 15:24:36,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:24:36,958 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-23 15:24:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:36,960 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:24:36,960 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:24:36,961 INFO L573 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 [2018-07-23 15:24:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:24:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:24:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:24:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-23 15:24:36,974 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 148 [2018-07-23 15:24:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:36,975 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-23 15:24:36,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:24:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-23 15:24:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:24:36,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:36,978 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-23 15:24:36,978 INFO L414 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1900043099, now seen corresponding path program 55 times [2018-07-23 15:24:36,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:37,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:37,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:24:37,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:24:37,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:24:37,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:24:37,362 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 76 states. [2018-07-23 15:24:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:37,724 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-23 15:24:37,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:24:37,725 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 152 [2018-07-23 15:24:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:37,728 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:24:37,728 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:24:37,730 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3515, Invalid=8917, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:24:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:24:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:24:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:24:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-23 15:24:37,751 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-23 15:24:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:37,751 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-23 15:24:37,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:24:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-23 15:24:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:24:37,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:37,753 INFO L353 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-23 15:24:37,754 INFO L414 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1700745815, now seen corresponding path program 56 times [2018-07-23 15:24:37,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:38,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:38,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:24:38,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:24:38,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:24:38,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:24:38,154 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 77 states. [2018-07-23 15:24:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:38,440 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-23 15:24:38,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:24:38,440 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 154 [2018-07-23 15:24:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:38,441 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:24:38,441 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:24:38,443 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3666, Invalid=9216, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:24:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:24:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:24:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:24:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-23 15:24:38,459 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-23 15:24:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:38,460 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-23 15:24:38,460 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:24:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-23 15:24:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:24:38,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:38,462 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-23 15:24:38,462 INFO L414 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash -845383085, now seen corresponding path program 57 times [2018-07-23 15:24:38,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:38,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:38,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:24:38,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:24:38,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:24:38,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:24:38,685 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-23 15:24:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:38,870 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-23 15:24:38,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:24:38,871 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-23 15:24:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:38,872 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:24:38,872 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:24:38,873 INFO L573 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 [2018-07-23 15:24:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:24:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:24:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:24:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-23 15:24:38,889 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 156 [2018-07-23 15:24:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:38,889 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-23 15:24:38,889 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:24:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-23 15:24:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:24:38,891 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:38,891 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-23 15:24:38,894 INFO L414 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:38,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1583446855, now seen corresponding path program 58 times [2018-07-23 15:24:38,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:39,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:39,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:24:39,257 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:24:39,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:24:39,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:24:39,262 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 80 states. [2018-07-23 15:24:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:39,616 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-23 15:24:39,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:24:39,617 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 160 [2018-07-23 15:24:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:39,618 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:24:39,618 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:24:39,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3900, Invalid=9906, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:24:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:24:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:24:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:24:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-23 15:24:39,640 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-23 15:24:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:39,640 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-23 15:24:39,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:24:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-23 15:24:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:24:39,642 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:39,642 INFO L353 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-23 15:24:39,642 INFO L414 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash 176666179, now seen corresponding path program 59 times [2018-07-23 15:24:39,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:40,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:40,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:24:40,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:24:40,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:24:40,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:24:40,033 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 81 states. [2018-07-23 15:24:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:40,330 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-23 15:24:40,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:24:40,330 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 162 [2018-07-23 15:24:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:40,331 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:24:40,331 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:24:40,333 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4059, Invalid=10221, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:24:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:24:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:24:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:24:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-23 15:24:40,349 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-23 15:24:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:40,349 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-23 15:24:40,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:24:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-23 15:24:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:24:40,351 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:40,351 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-23 15:24:40,351 INFO L414 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1175134783, now seen corresponding path program 60 times [2018-07-23 15:24:40,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:40,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:40,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:24:40,555 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:24:40,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:24:40,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:24:40,556 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-23 15:24:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:40,764 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-23 15:24:40,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:24:40,764 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-23 15:24:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:40,765 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:24:40,766 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:24:40,767 INFO L573 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 [2018-07-23 15:24:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:24:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:24:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:24:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-23 15:24:40,781 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 164 [2018-07-23 15:24:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:40,782 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-23 15:24:40,782 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:24:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-23 15:24:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:24:40,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:40,784 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-23 15:24:40,784 INFO L414 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash 773999923, now seen corresponding path program 61 times [2018-07-23 15:24:40,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:41,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:41,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:24:41,109 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:24:41,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:24:41,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:24:41,110 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 84 states. [2018-07-23 15:24:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:41,427 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-23 15:24:41,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:24:41,428 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 168 [2018-07-23 15:24:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:41,429 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:24:41,429 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:24:41,436 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4305, Invalid=10947, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:24:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:24:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:24:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:24:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-23 15:24:41,452 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-23 15:24:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:41,453 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-23 15:24:41,453 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:24:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-23 15:24:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:24:41,455 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:41,455 INFO L353 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-23 15:24:41,455 INFO L414 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:41,456 INFO L82 PathProgramCache]: Analyzing trace with hash -926168017, now seen corresponding path program 62 times [2018-07-23 15:24:41,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:41,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:41,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:24:41,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:24:41,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:24:41,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:24:41,866 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 85 states. [2018-07-23 15:24:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:42,213 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-23 15:24:42,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:24:42,213 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 170 [2018-07-23 15:24:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:42,215 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:24:42,215 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:24:42,217 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4472, Invalid=11278, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:24:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:24:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:24:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:24:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-23 15:24:42,235 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-23 15:24:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:42,235 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-23 15:24:42,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:24:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-23 15:24:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:24:42,237 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:42,237 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-23 15:24:42,237 INFO L414 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:42,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1594981419, now seen corresponding path program 63 times [2018-07-23 15:24:42,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:42,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:42,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:24:42,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:24:42,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:24:42,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:24:42,455 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-23 15:24:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:42,646 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-23 15:24:42,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:24:42,647 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-23 15:24:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:42,648 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:24:42,648 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:24:42,649 INFO L573 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 [2018-07-23 15:24:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:24:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:24:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:24:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-23 15:24:42,666 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 172 [2018-07-23 15:24:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:42,667 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-23 15:24:42,667 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:24:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-23 15:24:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:24:42,668 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:42,668 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-23 15:24:42,668 INFO L414 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1196544287, now seen corresponding path program 64 times [2018-07-23 15:24:42,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:43,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:43,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:24:43,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:24:43,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:24:43,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:24:43,043 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 88 states. [2018-07-23 15:24:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:43,442 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-23 15:24:43,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:24:43,443 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 176 [2018-07-23 15:24:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:43,444 INFO L225 Difference]: With dead ends: 269 [2018-07-23 15:24:43,444 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:24:43,446 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4730, Invalid=12040, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:24:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:24:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:24:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:24:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-23 15:24:43,469 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-23 15:24:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:43,469 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-23 15:24:43,470 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:24:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-23 15:24:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:24:43,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:43,471 INFO L353 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-23 15:24:43,471 INFO L414 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -889547749, now seen corresponding path program 65 times [2018-07-23 15:24:43,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:44,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:44,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:24:44,019 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:24:44,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:24:44,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=5808, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:24:44,021 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 89 states. [2018-07-23 15:24:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:44,422 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2018-07-23 15:24:44,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:24:44,422 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 178 [2018-07-23 15:24:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:44,423 INFO L225 Difference]: With dead ends: 271 [2018-07-23 15:24:44,423 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:24:44,425 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2710 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=4905, Invalid=12387, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:24:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:24:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:24:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:24:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-23 15:24:44,444 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-23 15:24:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:44,444 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-23 15:24:44,444 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:24:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-23 15:24:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:24:44,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:44,445 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-23 15:24:44,446 INFO L414 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 125732887, now seen corresponding path program 66 times [2018-07-23 15:24:44,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:44,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:44,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:24:44,691 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:24:44,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:24:44,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:24:44,691 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-23 15:24:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:44,906 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-23 15:24:44,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:24:44,906 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-23 15:24:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:44,908 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:24:44,908 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:24:44,909 INFO L573 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 [2018-07-23 15:24:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:24:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:24:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:24:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-23 15:24:44,928 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 180 [2018-07-23 15:24:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:44,928 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-23 15:24:44,928 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:24:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-23 15:24:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:24:44,929 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:44,929 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-23 15:24:44,930 INFO L414 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:44,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1723922677, now seen corresponding path program 67 times [2018-07-23 15:24:44,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:45,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:45,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:24:45,402 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:24:45,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:24:45,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:24:45,403 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 92 states. [2018-07-23 15:24:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:45,860 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-23 15:24:45,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:24:45,860 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 184 [2018-07-23 15:24:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:45,862 INFO L225 Difference]: With dead ends: 281 [2018-07-23 15:24:45,862 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:24:45,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5175, Invalid=13185, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:24:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:24:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:24:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:24:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-23 15:24:45,881 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-23 15:24:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:45,881 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-23 15:24:45,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:24:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-23 15:24:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:24:45,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:45,883 INFO L353 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-23 15:24:45,883 INFO L414 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1000141305, now seen corresponding path program 68 times [2018-07-23 15:24:45,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:46,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:46,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:24:46,280 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:24:46,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:24:46,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2208, Invalid=6348, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:24:46,282 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 93 states. [2018-07-23 15:24:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:46,626 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-23 15:24:46,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:24:46,626 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 186 [2018-07-23 15:24:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:46,628 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:24:46,628 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:24:46,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5358, Invalid=13548, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:24:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:24:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:24:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:24:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-23 15:24:46,647 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-23 15:24:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:46,647 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-23 15:24:46,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:24:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-23 15:24:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:24:46,649 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:46,649 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-23 15:24:46,649 INFO L414 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1230944765, now seen corresponding path program 69 times [2018-07-23 15:24:46,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:46,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:46,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:24:46,853 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:24:46,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:24:46,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:24:46,854 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-23 15:24:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:47,070 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-23 15:24:47,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:24:47,070 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-23 15:24:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:47,071 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:24:47,071 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:24:47,072 INFO L573 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 [2018-07-23 15:24:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:24:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:24:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:24:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-23 15:24:47,091 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 188 [2018-07-23 15:24:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:47,091 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-23 15:24:47,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:24:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-23 15:24:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:24:47,093 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:47,093 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-23 15:24:47,093 INFO L414 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1538846455, now seen corresponding path program 70 times [2018-07-23 15:24:47,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:47,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:47,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:24:47,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:24:47,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:24:47,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:24:47,624 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 96 states. [2018-07-23 15:24:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:47,940 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-23 15:24:47,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:24:47,940 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 192 [2018-07-23 15:24:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:47,941 INFO L225 Difference]: With dead ends: 293 [2018-07-23 15:24:47,941 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:24:47,943 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5640, Invalid=14382, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:24:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:24:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:24:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:24:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-23 15:24:47,959 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-23 15:24:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:47,959 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-23 15:24:47,959 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:24:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-23 15:24:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:24:47,960 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:47,961 INFO L353 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-23 15:24:47,961 INFO L414 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1328268813, now seen corresponding path program 71 times [2018-07-23 15:24:47,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:48,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:48,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:24:48,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:24:48,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:24:48,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2400, Invalid=6912, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:24:48,346 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 97 states. [2018-07-23 15:24:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:48,660 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2018-07-23 15:24:48,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:24:48,660 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 194 [2018-07-23 15:24:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:48,661 INFO L225 Difference]: With dead ends: 295 [2018-07-23 15:24:48,661 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:24:48,663 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5831, Invalid=14761, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:24:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:24:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:24:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:24:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-23 15:24:48,677 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-23 15:24:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:48,677 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-23 15:24:48,677 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:24:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-23 15:24:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:24:48,678 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:48,678 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-23 15:24:48,678 INFO L414 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:48,679 INFO L82 PathProgramCache]: Analyzing trace with hash 742962671, now seen corresponding path program 72 times [2018-07-23 15:24:48,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:48,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:48,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:24:48,881 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:24:48,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:24:48,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:24:48,882 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-23 15:24:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:49,077 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-23 15:24:49,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:24:49,077 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-23 15:24:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:49,078 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:24:49,078 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:24:49,079 INFO L573 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 [2018-07-23 15:24:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:24:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:24:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:24:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-23 15:24:49,099 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 196 [2018-07-23 15:24:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:49,099 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-23 15:24:49,099 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:24:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-23 15:24:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:24:49,100 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:49,101 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-23 15:24:49,101 INFO L414 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash -821131037, now seen corresponding path program 73 times [2018-07-23 15:24:49,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:49,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:49,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:24:49,464 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:24:49,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:24:49,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:24:49,465 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 100 states. [2018-07-23 15:24:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:49,920 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-23 15:24:49,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:24:49,920 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 200 [2018-07-23 15:24:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:49,921 INFO L225 Difference]: With dead ends: 305 [2018-07-23 15:24:49,921 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:24:49,923 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6125, Invalid=15631, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:24:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:24:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:24:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:24:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-23 15:24:49,939 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-23 15:24:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:49,939 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-23 15:24:49,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:24:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-23 15:24:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:24:49,940 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:49,940 INFO L353 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-23 15:24:49,940 INFO L414 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1801644065, now seen corresponding path program 74 times [2018-07-23 15:24:49,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:50,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:50,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:24:50,417 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:24:50,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:24:50,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2600, Invalid=7500, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:24:50,419 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 101 states. [2018-07-23 15:24:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:50,950 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-23 15:24:50,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:24:50,950 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 202 [2018-07-23 15:24:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:50,952 INFO L225 Difference]: With dead ends: 307 [2018-07-23 15:24:50,952 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:24:50,954 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6324, Invalid=16026, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:24:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:24:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:24:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:24:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-23 15:24:50,974 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-23 15:24:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:50,975 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-23 15:24:50,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:24:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-23 15:24:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:24:50,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:50,977 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-23 15:24:50,977 INFO L414 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:50,977 INFO L82 PathProgramCache]: Analyzing trace with hash 818141147, now seen corresponding path program 75 times [2018-07-23 15:24:50,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:51,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:51,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:24:51,235 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:24:51,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:24:51,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:24:51,236 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-23 15:24:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:51,403 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-23 15:24:51,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:24:51,403 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-23 15:24:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:51,405 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:24:51,405 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:24:51,406 INFO L573 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 [2018-07-23 15:24:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:24:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:24:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:24:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-23 15:24:51,430 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 204 [2018-07-23 15:24:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:51,431 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-23 15:24:51,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:24:51,431 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-23 15:24:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:24:51,432 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:51,432 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-23 15:24:51,432 INFO L414 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:51,433 INFO L82 PathProgramCache]: Analyzing trace with hash -66136881, now seen corresponding path program 76 times [2018-07-23 15:24:51,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:51,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:51,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:24:51,840 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:24:51,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:24:51,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:24:51,842 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 104 states. [2018-07-23 15:24:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:52,244 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-23 15:24:52,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:24:52,245 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 208 [2018-07-23 15:24:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:52,247 INFO L225 Difference]: With dead ends: 317 [2018-07-23 15:24:52,247 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:24:52,249 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6630, Invalid=16932, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:24:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:24:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:24:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:24:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-23 15:24:52,272 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-23 15:24:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:52,273 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-23 15:24:52,273 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:24:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-23 15:24:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:24:52,274 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:52,274 INFO L353 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-23 15:24:52,274 INFO L414 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1015850955, now seen corresponding path program 77 times [2018-07-23 15:24:52,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:52,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:52,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:24:52,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:24:52,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:24:52,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2808, Invalid=8112, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:24:52,706 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 105 states. [2018-07-23 15:24:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:53,128 INFO L93 Difference]: Finished difference Result 319 states and 321 transitions. [2018-07-23 15:24:53,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:24:53,128 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 210 [2018-07-23 15:24:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:53,130 INFO L225 Difference]: With dead ends: 319 [2018-07-23 15:24:53,130 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:24:53,132 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3826 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6837, Invalid=17343, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:24:53,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:24:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:24:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:24:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-23 15:24:53,150 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-23 15:24:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:53,151 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-23 15:24:53,151 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:24:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-23 15:24:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:24:53,152 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:53,152 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-23 15:24:53,153 INFO L414 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1424075719, now seen corresponding path program 78 times [2018-07-23 15:24:53,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:53,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:53,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:24:53,403 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:24:53,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:24:53,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:24:53,404 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-23 15:24:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:53,603 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-23 15:24:53,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:24:53,603 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-23 15:24:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:53,604 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:24:53,605 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:24:53,605 INFO L573 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 [2018-07-23 15:24:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:24:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:24:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:24:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-23 15:24:53,623 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 212 [2018-07-23 15:24:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:53,623 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-23 15:24:53,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:24:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-23 15:24:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:24:53,624 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:53,624 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-23 15:24:53,624 INFO L414 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1946735291, now seen corresponding path program 79 times [2018-07-23 15:24:53,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:54,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:54,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:24:54,026 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:24:54,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:24:54,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:24:54,028 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 108 states. [2018-07-23 15:24:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:54,463 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-23 15:24:54,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:24:54,463 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 216 [2018-07-23 15:24:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:54,464 INFO L225 Difference]: With dead ends: 329 [2018-07-23 15:24:54,464 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:24:54,465 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7155, Invalid=18285, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:24:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:24:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:24:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:24:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-23 15:24:54,482 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-23 15:24:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:54,482 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-23 15:24:54,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:24:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-23 15:24:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:24:54,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:54,484 INFO L353 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-23 15:24:54,484 INFO L414 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -34477641, now seen corresponding path program 80 times [2018-07-23 15:24:54,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:54,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:54,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:24:54,925 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:24:54,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:24:54,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3024, Invalid=8748, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:24:54,926 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 109 states. [2018-07-23 15:24:55,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:55,348 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-23 15:24:55,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:24:55,349 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 218 [2018-07-23 15:24:55,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:55,350 INFO L225 Difference]: With dead ends: 331 [2018-07-23 15:24:55,350 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:24:55,352 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7370, Invalid=18712, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:24:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:24:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:24:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:24:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-23 15:24:55,376 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-23 15:24:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:55,376 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-23 15:24:55,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:24:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-23 15:24:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:24:55,377 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:55,378 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-23 15:24:55,378 INFO L414 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1309593165, now seen corresponding path program 81 times [2018-07-23 15:24:55,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:55,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:55,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:24:55,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:24:55,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:24:55,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:24:55,760 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-23 15:24:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:56,015 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-23 15:24:56,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:24:56,015 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-23 15:24:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:56,016 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:24:56,016 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:24:56,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:24:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:24:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:24:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:24:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-23 15:24:56,032 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 220 [2018-07-23 15:24:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:56,032 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-23 15:24:56,032 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:24:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-23 15:24:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:24:56,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:56,033 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-23 15:24:56,033 INFO L414 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:56,034 INFO L82 PathProgramCache]: Analyzing trace with hash 281772711, now seen corresponding path program 82 times [2018-07-23 15:24:56,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:56,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:56,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:24:56,542 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:24:56,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:24:56,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:24:56,544 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 112 states. [2018-07-23 15:24:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:57,096 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-23 15:24:57,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:24:57,096 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 224 [2018-07-23 15:24:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:57,097 INFO L225 Difference]: With dead ends: 341 [2018-07-23 15:24:57,097 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:24:57,098 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7700, Invalid=19690, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:24:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:24:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:24:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:24:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-23 15:24:57,120 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-23 15:24:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:57,120 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-23 15:24:57,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:24:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-23 15:24:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:24:57,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:57,122 INFO L353 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-23 15:24:57,122 INFO L414 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:57,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1989926307, now seen corresponding path program 83 times [2018-07-23 15:24:57,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:57,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:57,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:24:57,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:24:57,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:24:57,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3248, Invalid=9408, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:24:57,611 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 113 states. [2018-07-23 15:24:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:58,068 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2018-07-23 15:24:58,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:24:58,068 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 226 [2018-07-23 15:24:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:58,069 INFO L225 Difference]: With dead ends: 343 [2018-07-23 15:24:58,069 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:24:58,071 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7923, Invalid=20133, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:24:58,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:24:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:24:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:24:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-23 15:24:58,094 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-23 15:24:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:58,095 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-23 15:24:58,095 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:24:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-23 15:24:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:24:58,096 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:58,096 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-23 15:24:58,096 INFO L414 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:58,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1446942305, now seen corresponding path program 84 times [2018-07-23 15:24:58,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:58,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:58,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:24:58,394 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:24:58,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:24:58,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:24:58,395 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-23 15:24:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:58,634 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-23 15:24:58,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:24:58,634 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-23 15:24:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:58,635 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:24:58,636 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:24:58,637 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:24:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:24:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:24:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:24:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-23 15:24:58,657 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 228 [2018-07-23 15:24:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:58,657 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-23 15:24:58,657 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:24:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-23 15:24:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:24:58,659 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:58,659 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-23 15:24:58,659 INFO L414 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1264196461, now seen corresponding path program 85 times [2018-07-23 15:24:58,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:59,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:59,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:24:59,144 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:24:59,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:24:59,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:24:59,145 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 116 states. [2018-07-23 15:24:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:59,611 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-23 15:24:59,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:24:59,611 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 232 [2018-07-23 15:24:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:59,612 INFO L225 Difference]: With dead ends: 353 [2018-07-23 15:24:59,612 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:24:59,614 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8265, Invalid=21147, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:24:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:24:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:24:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:24:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-23 15:24:59,638 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-23 15:24:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:59,638 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-23 15:24:59,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:24:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-23 15:24:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:24:59,639 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:59,640 INFO L353 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-23 15:24:59,640 INFO L414 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1289323407, now seen corresponding path program 86 times [2018-07-23 15:24:59,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:00,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:00,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:25:00,198 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:25:00,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:25:00,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3480, Invalid=10092, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:25:00,199 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 117 states. [2018-07-23 15:25:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:00,688 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-23 15:25:00,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:25:00,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 234 [2018-07-23 15:25:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:00,689 INFO L225 Difference]: With dead ends: 355 [2018-07-23 15:25:00,689 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:25:00,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8496, Invalid=21606, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:25:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:25:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:25:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:25:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-23 15:25:00,714 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-23 15:25:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:00,714 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-23 15:25:00,714 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:25:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-23 15:25:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:25:00,715 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:00,715 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-23 15:25:00,716 INFO L414 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:00,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1499376757, now seen corresponding path program 87 times [2018-07-23 15:25:00,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:00,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:00,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:25:00,995 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:25:00,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:25:00,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:25:00,996 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-23 15:25:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:01,205 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-23 15:25:01,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:25:01,206 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-23 15:25:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:01,207 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:25:01,207 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:25:01,208 INFO L573 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 [2018-07-23 15:25:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:25:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:25:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:25:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-23 15:25:01,228 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 236 [2018-07-23 15:25:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:01,228 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-23 15:25:01,228 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:25:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-23 15:25:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:25:01,229 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:01,230 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-23 15:25:01,230 INFO L414 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 174520447, now seen corresponding path program 88 times [2018-07-23 15:25:01,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:01,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:01,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:25:01,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:25:01,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:25:01,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:25:01,739 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 120 states. [2018-07-23 15:25:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:02,266 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2018-07-23 15:25:02,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:25:02,266 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 240 [2018-07-23 15:25:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:02,267 INFO L225 Difference]: With dead ends: 365 [2018-07-23 15:25:02,267 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:25:02,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8850, Invalid=22656, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:25:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:25:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:25:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:25:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-23 15:25:02,287 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-23 15:25:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:02,287 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-23 15:25:02,287 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:25:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-23 15:25:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:25:02,288 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:02,289 INFO L353 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-23 15:25:02,289 INFO L414 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:02,289 INFO L82 PathProgramCache]: Analyzing trace with hash -277226629, now seen corresponding path program 89 times [2018-07-23 15:25:02,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:02,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:02,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:25:02,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:25:02,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:25:02,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3720, Invalid=10800, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:25:02,792 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 121 states. [2018-07-23 15:25:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:03,374 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-23 15:25:03,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:25:03,374 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 242 [2018-07-23 15:25:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:03,376 INFO L225 Difference]: With dead ends: 367 [2018-07-23 15:25:03,376 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:25:03,378 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9089, Invalid=23131, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:25:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:25:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:25:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:25:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-23 15:25:03,408 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-23 15:25:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:03,408 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-23 15:25:03,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:25:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-23 15:25:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:25:03,409 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:03,409 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-23 15:25:03,410 INFO L414 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash -614469769, now seen corresponding path program 90 times [2018-07-23 15:25:03,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:03,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:03,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:25:03,862 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:25:03,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:25:03,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:25:03,863 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-23 15:25:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:04,056 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-23 15:25:04,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:25:04,056 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-23 15:25:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:04,057 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:25:04,057 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:25:04,058 INFO L573 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 [2018-07-23 15:25:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:25:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:25:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:25:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-23 15:25:04,076 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 244 [2018-07-23 15:25:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:04,077 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-23 15:25:04,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:25:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-23 15:25:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:25:04,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:04,078 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-23 15:25:04,078 INFO L414 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1163771499, now seen corresponding path program 91 times [2018-07-23 15:25:04,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:04,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:04,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:25:04,656 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:25:04,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:25:04,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:25:04,658 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 124 states. [2018-07-23 15:25:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:05,206 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-23 15:25:05,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:25:05,207 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 248 [2018-07-23 15:25:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:05,208 INFO L225 Difference]: With dead ends: 377 [2018-07-23 15:25:05,208 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:25:05,211 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9455, Invalid=24217, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:25:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:25:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:25:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:25:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-23 15:25:05,232 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-23 15:25:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:05,232 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-23 15:25:05,232 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:25:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-23 15:25:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:25:05,234 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:05,234 INFO L353 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-23 15:25:05,234 INFO L414 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1439425895, now seen corresponding path program 92 times [2018-07-23 15:25:05,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:05,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:05,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:25:05,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:25:05,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:25:05,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3968, Invalid=11532, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:25:05,770 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 125 states. [2018-07-23 15:25:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:06,342 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-23 15:25:06,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:25:06,342 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 250 [2018-07-23 15:25:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:06,343 INFO L225 Difference]: With dead ends: 379 [2018-07-23 15:25:06,343 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:25:06,346 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5491 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9702, Invalid=24708, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:25:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:25:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:25:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:25:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-23 15:25:06,364 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-23 15:25:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:06,365 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-23 15:25:06,365 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:25:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-23 15:25:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:25:06,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:06,366 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-23 15:25:06,366 INFO L414 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash 55328099, now seen corresponding path program 93 times [2018-07-23 15:25:06,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:06,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:06,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:25:06,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:25:06,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:25:06,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:25:06,680 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-23 15:25:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:06,922 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-23 15:25:06,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:25:06,923 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-23 15:25:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:06,924 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:25:06,924 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:25:06,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:25:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:25:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-23 15:25:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-23 15:25:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-23 15:25:06,947 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 252 [2018-07-23 15:25:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:06,947 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-23 15:25:06,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:25:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-23 15:25:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 15:25:06,948 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:06,948 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-23 15:25:06,948 INFO L414 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash -514247081, now seen corresponding path program 94 times [2018-07-23 15:25:06,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:07,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:07,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:25:07,565 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:25:07,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:25:07,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:25:07,567 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 128 states. [2018-07-23 15:25:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:08,061 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2018-07-23 15:25:08,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:25:08,062 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 256 [2018-07-23 15:25:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:08,063 INFO L225 Difference]: With dead ends: 389 [2018-07-23 15:25:08,063 INFO L226 Difference]: Without dead ends: 259 [2018-07-23 15:25:08,066 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10080, Invalid=25830, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:25:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-23 15:25:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-23 15:25:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-23 15:25:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-23 15:25:08,085 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-23 15:25:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:08,085 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-23 15:25:08,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:25:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-23 15:25:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-23 15:25:08,087 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:08,087 INFO L353 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-23 15:25:08,087 INFO L414 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1080123053, now seen corresponding path program 95 times [2018-07-23 15:25:08,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:08,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:08,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:25:08,749 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:25:08,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:25:08,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4224, Invalid=12288, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:25:08,751 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 129 states. [2018-07-23 15:25:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:09,331 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2018-07-23 15:25:09,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:25:09,332 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 258 [2018-07-23 15:25:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:09,333 INFO L225 Difference]: With dead ends: 391 [2018-07-23 15:25:09,333 INFO L226 Difference]: Without dead ends: 261 [2018-07-23 15:25:09,335 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5860 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10335, Invalid=26337, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:25:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-23 15:25:09,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-23 15:25:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-23 15:25:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-23 15:25:09,353 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-23 15:25:09,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:09,353 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-23 15:25:09,353 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:25:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-23 15:25:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-23 15:25:09,354 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:09,354 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-23 15:25:09,354 INFO L414 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash 573914447, now seen corresponding path program 96 times [2018-07-23 15:25:09,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:09,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:09,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:25:09,689 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:25:09,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:25:09,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:25:09,690 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-23 15:25:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:09,922 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-23 15:25:09,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:25:09,922 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-23 15:25:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:09,924 INFO L225 Difference]: With dead ends: 267 [2018-07-23 15:25:09,924 INFO L226 Difference]: Without dead ends: 265 [2018-07-23 15:25:09,925 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:25:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-23 15:25:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-23 15:25:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-23 15:25:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-23 15:25:09,954 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 260 [2018-07-23 15:25:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:09,954 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-23 15:25:09,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:25:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-23 15:25:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-23 15:25:09,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:09,956 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-23 15:25:09,956 INFO L414 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1655201859, now seen corresponding path program 97 times [2018-07-23 15:25:09,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:10,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:10,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:25:10,770 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:25:10,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:25:10,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:25:10,772 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 132 states. [2018-07-23 15:25:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:11,422 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2018-07-23 15:25:11,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:25:11,423 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 264 [2018-07-23 15:25:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:11,424 INFO L225 Difference]: With dead ends: 401 [2018-07-23 15:25:11,424 INFO L226 Difference]: Without dead ends: 267 [2018-07-23 15:25:11,427 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10725, Invalid=27495, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:25:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-23 15:25:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-23 15:25:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-23 15:25:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-23 15:25:11,466 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-23 15:25:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:11,466 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-23 15:25:11,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:25:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-23 15:25:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 15:25:11,468 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:11,469 INFO L353 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-23 15:25:11,469 INFO L414 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1967198015, now seen corresponding path program 98 times [2018-07-23 15:25:11,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:12,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:12,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:25:12,105 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:25:12,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:25:12,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4488, Invalid=13068, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:25:12,107 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 133 states. [2018-07-23 15:25:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:12,582 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-23 15:25:12,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:25:12,582 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 266 [2018-07-23 15:25:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:12,583 INFO L225 Difference]: With dead ends: 403 [2018-07-23 15:25:12,583 INFO L226 Difference]: Without dead ends: 269 [2018-07-23 15:25:12,585 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10988, Invalid=28018, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:25:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-23 15:25:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-23 15:25:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-23 15:25:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-23 15:25:12,605 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-23 15:25:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:12,605 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-23 15:25:12,605 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:25:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-23 15:25:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-23 15:25:12,607 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:12,607 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-23 15:25:12,607 INFO L414 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1147793211, now seen corresponding path program 99 times [2018-07-23 15:25:12,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:13,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:13,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:25:13,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:25:13,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:25:13,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:25:13,025 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-23 15:25:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:13,277 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-23 15:25:13,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:25:13,278 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-23 15:25:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:13,279 INFO L225 Difference]: With dead ends: 275 [2018-07-23 15:25:13,279 INFO L226 Difference]: Without dead ends: 273 [2018-07-23 15:25:13,281 INFO L573 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 [2018-07-23 15:25:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-23 15:25:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-23 15:25:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-23 15:25:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-23 15:25:13,309 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 268 [2018-07-23 15:25:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:13,310 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-23 15:25:13,310 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:25:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-23 15:25:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-23 15:25:13,311 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:13,311 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-23 15:25:13,312 INFO L414 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash 370818095, now seen corresponding path program 100 times [2018-07-23 15:25:13,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:13,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:13,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:25:13,941 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:25:13,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:25:13,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:25:13,943 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 136 states. [2018-07-23 15:25:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:14,483 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-07-23 15:25:14,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:25:14,483 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 272 [2018-07-23 15:25:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:14,485 INFO L225 Difference]: With dead ends: 413 [2018-07-23 15:25:14,485 INFO L226 Difference]: Without dead ends: 275 [2018-07-23 15:25:14,488 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11390, Invalid=29212, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:25:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-23 15:25:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-23 15:25:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-23 15:25:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-23 15:25:14,512 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-23 15:25:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:14,512 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-23 15:25:14,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:25:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-23 15:25:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-23 15:25:14,513 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:14,514 INFO L353 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-23 15:25:14,514 INFO L414 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2021511381, now seen corresponding path program 101 times [2018-07-23 15:25:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:15,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:15,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:25:15,184 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:25:15,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:25:15,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4760, Invalid=13872, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:25:15,186 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 137 states. [2018-07-23 15:25:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:15,675 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2018-07-23 15:25:15,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:25:15,675 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 274 [2018-07-23 15:25:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:15,676 INFO L225 Difference]: With dead ends: 415 [2018-07-23 15:25:15,676 INFO L226 Difference]: Without dead ends: 277 [2018-07-23 15:25:15,678 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6634 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11661, Invalid=29751, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:25:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-23 15:25:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-23 15:25:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-23 15:25:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-23 15:25:15,706 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-23 15:25:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:15,706 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-23 15:25:15,706 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:25:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-23 15:25:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-23 15:25:15,707 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:15,708 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-23 15:25:15,708 INFO L414 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:15,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1052332839, now seen corresponding path program 102 times [2018-07-23 15:25:15,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:16,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:16,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:25:16,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:25:16,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:25:16,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:25:16,071 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-23 15:25:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:16,300 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-23 15:25:16,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:25:16,300 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-23 15:25:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:16,301 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:25:16,301 INFO L226 Difference]: Without dead ends: 281 [2018-07-23 15:25:16,302 INFO L573 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 [2018-07-23 15:25:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-23 15:25:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-23 15:25:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-23 15:25:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-23 15:25:16,324 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 276 [2018-07-23 15:25:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:16,324 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-23 15:25:16,324 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:25:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-23 15:25:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-23 15:25:16,325 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:16,325 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-23 15:25:16,326 INFO L414 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash -788674021, now seen corresponding path program 103 times [2018-07-23 15:25:16,326 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:17,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:17,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:25:17,020 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:25:17,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:25:17,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:25:17,022 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 140 states. [2018-07-23 15:25:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:17,597 INFO L93 Difference]: Finished difference Result 425 states and 427 transitions. [2018-07-23 15:25:17,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:25:17,597 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 280 [2018-07-23 15:25:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:17,598 INFO L225 Difference]: With dead ends: 425 [2018-07-23 15:25:17,598 INFO L226 Difference]: Without dead ends: 283 [2018-07-23 15:25:17,602 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12075, Invalid=30981, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:25:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-23 15:25:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-23 15:25:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-23 15:25:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-23 15:25:17,626 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-23 15:25:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:17,627 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-23 15:25:17,627 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:25:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-23 15:25:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-23 15:25:17,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:17,628 INFO L353 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-23 15:25:17,628 INFO L414 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1884225257, now seen corresponding path program 104 times [2018-07-23 15:25:17,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:18,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:18,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:25:18,280 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:25:18,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:25:18,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5040, Invalid=14700, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:25:18,282 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 141 states. [2018-07-23 15:25:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:19,007 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-23 15:25:19,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:25:19,007 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 282 [2018-07-23 15:25:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:19,008 INFO L225 Difference]: With dead ends: 427 [2018-07-23 15:25:19,008 INFO L226 Difference]: Without dead ends: 285 [2018-07-23 15:25:19,012 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7039 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12354, Invalid=31536, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:25:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-23 15:25:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-23 15:25:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-23 15:25:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-23 15:25:19,103 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-23 15:25:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:19,104 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-23 15:25:19,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:25:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-23 15:25:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-23 15:25:19,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:19,105 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-23 15:25:19,107 INFO L414 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:19,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1852991763, now seen corresponding path program 105 times [2018-07-23 15:25:19,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:19,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:19,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:25:19,545 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:25:19,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:25:19,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:25:19,545 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-23 15:25:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:19,814 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-23 15:25:19,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:25:19,814 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-23 15:25:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:19,815 INFO L225 Difference]: With dead ends: 291 [2018-07-23 15:25:19,815 INFO L226 Difference]: Without dead ends: 289 [2018-07-23 15:25:19,817 INFO L573 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 [2018-07-23 15:25:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-23 15:25:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-23 15:25:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-23 15:25:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-23 15:25:19,846 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 284 [2018-07-23 15:25:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:19,847 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-23 15:25:19,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:25:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-23 15:25:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-23 15:25:19,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:19,848 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-23 15:25:19,848 INFO L414 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1323169273, now seen corresponding path program 106 times [2018-07-23 15:25:19,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:20,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:20,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:25:20,498 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:25:20,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:25:20,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:25:20,500 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 144 states. [2018-07-23 15:25:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:21,243 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-23 15:25:21,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:25:21,243 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 288 [2018-07-23 15:25:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:21,244 INFO L225 Difference]: With dead ends: 437 [2018-07-23 15:25:21,244 INFO L226 Difference]: Without dead ends: 291 [2018-07-23 15:25:21,247 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12780, Invalid=32802, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:25:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-23 15:25:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-23 15:25:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-23 15:25:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-23 15:25:21,276 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-23 15:25:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:21,277 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-23 15:25:21,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:25:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-23 15:25:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-23 15:25:21,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:21,278 INFO L353 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-23 15:25:21,278 INFO L414 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:21,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1872528643, now seen corresponding path program 107 times [2018-07-23 15:25:21,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:22,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:22,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:25:22,031 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:25:22,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:25:22,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5328, Invalid=15552, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:25:22,033 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 145 states. [2018-07-23 15:25:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:22,679 INFO L93 Difference]: Finished difference Result 439 states and 441 transitions. [2018-07-23 15:25:22,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:25:22,679 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 290 [2018-07-23 15:25:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:22,680 INFO L225 Difference]: With dead ends: 439 [2018-07-23 15:25:22,680 INFO L226 Difference]: Without dead ends: 293 [2018-07-23 15:25:22,683 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13067, Invalid=33373, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:25:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-23 15:25:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-23 15:25:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-23 15:25:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-23 15:25:22,710 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-23 15:25:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:22,710 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-23 15:25:22,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:25:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-23 15:25:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-23 15:25:22,711 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:22,711 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-23 15:25:22,711 INFO L414 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2036609279, now seen corresponding path program 108 times [2018-07-23 15:25:22,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:23,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:23,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:25:23,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:25:23,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:25:23,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:25:23,218 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-23 15:25:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:23,510 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-23 15:25:23,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:25:23,511 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-23 15:25:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:23,512 INFO L225 Difference]: With dead ends: 299 [2018-07-23 15:25:23,512 INFO L226 Difference]: Without dead ends: 297 [2018-07-23 15:25:23,514 INFO L573 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 [2018-07-23 15:25:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-23 15:25:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-23 15:25:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-23 15:25:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-23 15:25:23,545 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 292 [2018-07-23 15:25:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:23,545 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-23 15:25:23,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:25:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-23 15:25:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-23 15:25:23,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:23,546 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-23 15:25:23,547 INFO L414 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash -589956109, now seen corresponding path program 109 times [2018-07-23 15:25:23,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:24,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:24,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:25:24,322 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:25:24,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:25:24,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:25:24,324 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 148 states. [2018-07-23 15:25:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:25,103 INFO L93 Difference]: Finished difference Result 449 states and 451 transitions. [2018-07-23 15:25:25,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:25:25,103 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 296 [2018-07-23 15:25:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:25,104 INFO L225 Difference]: With dead ends: 449 [2018-07-23 15:25:25,104 INFO L226 Difference]: Without dead ends: 299 [2018-07-23 15:25:25,107 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13505, Invalid=34675, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:25:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-23 15:25:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-23 15:25:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-23 15:25:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-23 15:25:25,130 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-23 15:25:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:25,130 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-23 15:25:25,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:25:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-23 15:25:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-23 15:25:25,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:25,131 INFO L353 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-23 15:25:25,131 INFO L414 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:25,131 INFO L82 PathProgramCache]: Analyzing trace with hash 294894319, now seen corresponding path program 110 times [2018-07-23 15:25:25,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:25,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:25,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:25:25,944 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:25:25,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:25:25,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5624, Invalid=16428, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:25:25,947 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 149 states. [2018-07-23 15:25:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:26,748 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-23 15:25:26,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:25:26,749 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 298 [2018-07-23 15:25:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:26,750 INFO L225 Difference]: With dead ends: 451 [2018-07-23 15:25:26,750 INFO L226 Difference]: Without dead ends: 301 [2018-07-23 15:25:26,753 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7885 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13800, Invalid=35262, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:25:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-23 15:25:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-23 15:25:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-23 15:25:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-23 15:25:26,784 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-23 15:25:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:26,784 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-23 15:25:26,784 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:25:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-23 15:25:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-23 15:25:26,786 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:26,786 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-23 15:25:26,786 INFO L414 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:26,786 INFO L82 PathProgramCache]: Analyzing trace with hash 232631019, now seen corresponding path program 111 times [2018-07-23 15:25:26,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:27,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:27,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:25:27,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:25:27,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:25:27,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:25:27,355 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-23 15:25:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:27,669 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-23 15:25:27,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:25:27,670 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-23 15:25:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:27,670 INFO L225 Difference]: With dead ends: 307 [2018-07-23 15:25:27,671 INFO L226 Difference]: Without dead ends: 305 [2018-07-23 15:25:27,672 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:25:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-23 15:25:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-23 15:25:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-23 15:25:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-23 15:25:27,696 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 300 [2018-07-23 15:25:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:27,697 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-23 15:25:27,697 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:25:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-23 15:25:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-23 15:25:27,698 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:27,698 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-23 15:25:27,699 INFO L414 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1122541535, now seen corresponding path program 112 times [2018-07-23 15:25:27,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:28,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:28,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:25:28,593 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:25:28,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:25:28,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:25:28,595 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 152 states. [2018-07-23 15:25:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:29,406 INFO L93 Difference]: Finished difference Result 461 states and 463 transitions. [2018-07-23 15:25:29,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:25:29,406 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 304 [2018-07-23 15:25:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:29,407 INFO L225 Difference]: With dead ends: 461 [2018-07-23 15:25:29,407 INFO L226 Difference]: Without dead ends: 307 [2018-07-23 15:25:29,412 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14250, Invalid=36600, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:25:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-23 15:25:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-23 15:25:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-23 15:25:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-23 15:25:29,435 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-23 15:25:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:29,435 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-23 15:25:29,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:25:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-23 15:25:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-23 15:25:29,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:29,436 INFO L353 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-23 15:25:29,436 INFO L414 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 677749467, now seen corresponding path program 113 times [2018-07-23 15:25:29,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:30,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:30,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:25:30,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:25:30,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:25:30,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5928, Invalid=17328, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:25:30,347 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 153 states. [2018-07-23 15:25:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:31,179 INFO L93 Difference]: Finished difference Result 463 states and 465 transitions. [2018-07-23 15:25:31,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:25:31,179 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 306 [2018-07-23 15:25:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:31,180 INFO L225 Difference]: With dead ends: 463 [2018-07-23 15:25:31,180 INFO L226 Difference]: Without dead ends: 309 [2018-07-23 15:25:31,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14553, Invalid=37203, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:25:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-23 15:25:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-23 15:25:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-23 15:25:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-23 15:25:31,206 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-23 15:25:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:31,207 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-23 15:25:31,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:25:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-23 15:25:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-23 15:25:31,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:31,208 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-23 15:25:31,208 INFO L414 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:31,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1565665577, now seen corresponding path program 114 times [2018-07-23 15:25:31,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:31,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:31,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:25:31,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:25:31,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:25:31,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:25:31,705 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-23 15:25:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:32,042 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-23 15:25:32,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:25:32,043 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-23 15:25:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:32,043 INFO L225 Difference]: With dead ends: 315 [2018-07-23 15:25:32,043 INFO L226 Difference]: Without dead ends: 313 [2018-07-23 15:25:32,045 INFO L573 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 [2018-07-23 15:25:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-23 15:25:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-23 15:25:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-23 15:25:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-23 15:25:32,069 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 308 [2018-07-23 15:25:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:32,069 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-23 15:25:32,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:25:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-23 15:25:32,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-23 15:25:32,070 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:32,070 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-23 15:25:32,070 INFO L414 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1521022411, now seen corresponding path program 115 times [2018-07-23 15:25:32,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:32,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:32,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:25:32,924 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:25:32,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:25:32,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:25:32,926 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 156 states. [2018-07-23 15:25:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:33,770 INFO L93 Difference]: Finished difference Result 473 states and 475 transitions. [2018-07-23 15:25:33,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:25:33,770 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 312 [2018-07-23 15:25:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:33,771 INFO L225 Difference]: With dead ends: 473 [2018-07-23 15:25:33,771 INFO L226 Difference]: Without dead ends: 315 [2018-07-23 15:25:33,774 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15015, Invalid=38577, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:25:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-23 15:25:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-23 15:25:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-23 15:25:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-23 15:25:33,795 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-23 15:25:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:33,795 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-23 15:25:33,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:25:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-23 15:25:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-23 15:25:33,797 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:33,797 INFO L353 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-23 15:25:33,797 INFO L414 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -278840121, now seen corresponding path program 116 times [2018-07-23 15:25:33,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:34,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:34,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:25:34,783 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:25:34,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:25:34,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6240, Invalid=18252, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:25:34,786 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 157 states. [2018-07-23 15:25:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:35,593 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2018-07-23 15:25:35,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:25:35,593 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 314 [2018-07-23 15:25:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:35,594 INFO L225 Difference]: With dead ends: 475 [2018-07-23 15:25:35,594 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:25:35,596 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15326, Invalid=39196, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:25:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:25:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-23 15:25:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-23 15:25:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-23 15:25:35,618 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-23 15:25:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:35,618 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-23 15:25:35,618 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:25:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-23 15:25:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-23 15:25:35,619 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:35,619 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-23 15:25:35,619 INFO L414 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:35,619 INFO L82 PathProgramCache]: Analyzing trace with hash 925086915, now seen corresponding path program 117 times [2018-07-23 15:25:35,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:36,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:36,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:25:36,105 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:25:36,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:25:36,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:25:36,106 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-23 15:25:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:36,403 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-23 15:25:36,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:25:36,404 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-23 15:25:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:36,404 INFO L225 Difference]: With dead ends: 323 [2018-07-23 15:25:36,404 INFO L226 Difference]: Without dead ends: 321 [2018-07-23 15:25:36,406 INFO L573 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 [2018-07-23 15:25:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-23 15:25:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-23 15:25:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-23 15:25:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-23 15:25:36,435 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 316 [2018-07-23 15:25:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:36,435 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-23 15:25:36,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:25:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-23 15:25:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-23 15:25:36,437 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:36,437 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-23 15:25:36,437 INFO L414 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash -471466569, now seen corresponding path program 118 times [2018-07-23 15:25:36,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:37,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:37,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:25:37,322 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:25:37,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:25:37,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:25:37,324 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 160 states. [2018-07-23 15:25:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,059 INFO L93 Difference]: Finished difference Result 485 states and 487 transitions. [2018-07-23 15:25:38,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:25:38,059 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 320 [2018-07-23 15:25:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,060 INFO L225 Difference]: With dead ends: 485 [2018-07-23 15:25:38,060 INFO L226 Difference]: Without dead ends: 323 [2018-07-23 15:25:38,063 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15800, Invalid=40606, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:25:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-23 15:25:38,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-23 15:25:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-23 15:25:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-23 15:25:38,085 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-23 15:25:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,085 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-23 15:25:38,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:25:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-23 15:25:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-23 15:25:38,086 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,086 INFO L353 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-23 15:25:38,086 INFO L414 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -363493197, now seen corresponding path program 119 times [2018-07-23 15:25:38,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:38,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:25:38,971 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:25:38,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:25:38,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6560, Invalid=19200, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:25:38,972 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 161 states. [2018-07-23 15:25:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,620 INFO L93 Difference]: Finished difference Result 487 states and 489 transitions. [2018-07-23 15:25:39,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:25:39,620 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 322 [2018-07-23 15:25:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,621 INFO L225 Difference]: With dead ends: 487 [2018-07-23 15:25:39,621 INFO L226 Difference]: Without dead ends: 325 [2018-07-23 15:25:39,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16119, Invalid=41241, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:25:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-23 15:25:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-23 15:25:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-23 15:25:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-23 15:25:39,645 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-23 15:25:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,645 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-23 15:25:39,645 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:25:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-23 15:25:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-23 15:25:39,646 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,646 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-23 15:25:39,646 INFO L414 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,646 INFO L82 PathProgramCache]: Analyzing trace with hash 319702191, now seen corresponding path program 120 times [2018-07-23 15:25:39,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:40,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:25:40,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:25:40,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:25:40,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:25:40,152 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-23 15:25:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,443 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-23 15:25:40,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:25:40,443 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-23 15:25:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,444 INFO L225 Difference]: With dead ends: 331 [2018-07-23 15:25:40,444 INFO L226 Difference]: Without dead ends: 329 [2018-07-23 15:25:40,445 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:25:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-23 15:25:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-23 15:25:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-23 15:25:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-23 15:25:40,474 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 324 [2018-07-23 15:25:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,475 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-23 15:25:40,475 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:25:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-23 15:25:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-23 15:25:40,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,476 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-23 15:25:40,477 INFO L414 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1494304861, now seen corresponding path program 121 times [2018-07-23 15:25:40,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:41,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:25:41,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:25:41,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:25:41,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:25:41,351 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 164 states. [2018-07-23 15:25:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:42,226 INFO L93 Difference]: Finished difference Result 497 states and 499 transitions. [2018-07-23 15:25:42,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:25:42,226 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 328 [2018-07-23 15:25:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:42,227 INFO L225 Difference]: With dead ends: 497 [2018-07-23 15:25:42,227 INFO L226 Difference]: Without dead ends: 331 [2018-07-23 15:25:42,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16605, Invalid=42687, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:25:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-23 15:25:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-23 15:25:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-23 15:25:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-23 15:25:42,257 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-23 15:25:42,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,257 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-23 15:25:42,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:25:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-23 15:25:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-23 15:25:42,259 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,259 INFO L353 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-23 15:25:42,259 INFO L414 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1517189473, now seen corresponding path program 122 times [2018-07-23 15:25:42,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:43,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:25:43,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:25:43,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:25:43,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6888, Invalid=20172, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:25:43,156 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 165 states. [2018-07-23 15:25:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,948 INFO L93 Difference]: Finished difference Result 499 states and 501 transitions. [2018-07-23 15:25:43,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:25:43,948 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 330 [2018-07-23 15:25:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,949 INFO L225 Difference]: With dead ends: 499 [2018-07-23 15:25:43,949 INFO L226 Difference]: Without dead ends: 333 [2018-07-23 15:25:43,954 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16932, Invalid=43338, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:25:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-23 15:25:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-23 15:25:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-23 15:25:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-23 15:25:43,985 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-23 15:25:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,985 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-23 15:25:43,985 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:25:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-23 15:25:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-23 15:25:43,986 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,986 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-23 15:25:43,986 INFO L414 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2034465125, now seen corresponding path program 123 times [2018-07-23 15:25:43,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:44,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:44,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:25:44,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:25:44,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:25:44,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:25:44,544 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-23 15:25:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:44,860 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-23 15:25:44,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:25:44,860 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-23 15:25:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:44,861 INFO L225 Difference]: With dead ends: 339 [2018-07-23 15:25:44,861 INFO L226 Difference]: Without dead ends: 337 [2018-07-23 15:25:44,863 INFO L573 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 [2018-07-23 15:25:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-23 15:25:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-23 15:25:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-23 15:25:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-23 15:25:44,889 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 332 [2018-07-23 15:25:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:44,890 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-23 15:25:44,890 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:25:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-23 15:25:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-23 15:25:44,891 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:44,891 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-23 15:25:44,891 INFO L414 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash 881992591, now seen corresponding path program 124 times [2018-07-23 15:25:44,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:45,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:25:45,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:25:45,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:25:45,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:25:45,954 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 168 states. [2018-07-23 15:25:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:46,751 INFO L93 Difference]: Finished difference Result 509 states and 511 transitions. [2018-07-23 15:25:46,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:25:46,751 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 336 [2018-07-23 15:25:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:46,752 INFO L225 Difference]: With dead ends: 509 [2018-07-23 15:25:46,752 INFO L226 Difference]: Without dead ends: 339 [2018-07-23 15:25:46,755 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17430, Invalid=44820, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:25:46,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-23 15:25:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-23 15:25:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-23 15:25:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-23 15:25:46,779 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-23 15:25:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:46,779 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-23 15:25:46,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:25:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-23 15:25:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-23 15:25:46,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:46,780 INFO L353 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-23 15:25:46,780 INFO L414 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1977890443, now seen corresponding path program 125 times [2018-07-23 15:25:46,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:47,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:25:47,686 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:25:47,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:25:47,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7224, Invalid=21168, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:25:47,689 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 169 states. [2018-07-23 15:25:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:48,549 INFO L93 Difference]: Finished difference Result 511 states and 513 transitions. [2018-07-23 15:25:48,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:25:48,549 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 338 [2018-07-23 15:25:48,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:48,550 INFO L225 Difference]: With dead ends: 511 [2018-07-23 15:25:48,550 INFO L226 Difference]: Without dead ends: 341 [2018-07-23 15:25:48,554 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17765, Invalid=45487, Unknown=0, NotChecked=0, Total=63252 [2018-07-23 15:25:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-23 15:25:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-23 15:25:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-23 15:25:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-23 15:25:48,580 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-23 15:25:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:48,580 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-23 15:25:48,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:25:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-23 15:25:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-23 15:25:48,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:48,581 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-23 15:25:48,581 INFO L414 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1426228601, now seen corresponding path program 126 times [2018-07-23 15:25:48,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:49,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:49,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:25:49,124 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:25:49,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:25:49,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:25:49,126 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-23 15:25:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:49,501 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-23 15:25:49,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:25:49,501 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-23 15:25:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:49,502 INFO L225 Difference]: With dead ends: 347 [2018-07-23 15:25:49,502 INFO L226 Difference]: Without dead ends: 345 [2018-07-23 15:25:49,504 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:25:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-23 15:25:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-23 15:25:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-23 15:25:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-23 15:25:49,528 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 340 [2018-07-23 15:25:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:49,528 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-23 15:25:49,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:25:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-23 15:25:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-23 15:25:49,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:49,530 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-23 15:25:49,530 INFO L414 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1507901061, now seen corresponding path program 127 times [2018-07-23 15:25:49,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:50,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:50,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:25:50,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:25:50,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:25:50,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:25:50,472 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 172 states. [2018-07-23 15:25:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:51,422 INFO L93 Difference]: Finished difference Result 521 states and 523 transitions. [2018-07-23 15:25:51,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:25:51,422 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 344 [2018-07-23 15:25:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:51,423 INFO L225 Difference]: With dead ends: 521 [2018-07-23 15:25:51,423 INFO L226 Difference]: Without dead ends: 347 [2018-07-23 15:25:51,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18275, Invalid=47005, Unknown=0, NotChecked=0, Total=65280 [2018-07-23 15:25:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-23 15:25:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-23 15:25:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-23 15:25:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-23 15:25:51,471 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-23 15:25:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:51,471 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-23 15:25:51,471 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:25:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-23 15:25:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-23 15:25:51,473 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:51,473 INFO L353 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-23 15:25:51,473 INFO L414 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash 949786743, now seen corresponding path program 128 times [2018-07-23 15:25:51,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:52,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:52,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:25:52,468 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:25:52,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:25:52,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7568, Invalid=22188, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:25:52,471 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 173 states. [2018-07-23 15:25:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:53,280 INFO L93 Difference]: Finished difference Result 523 states and 525 transitions. [2018-07-23 15:25:53,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:25:53,280 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 346 [2018-07-23 15:25:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:53,281 INFO L225 Difference]: With dead ends: 523 [2018-07-23 15:25:53,281 INFO L226 Difference]: Without dead ends: 349 [2018-07-23 15:25:53,284 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18618, Invalid=47688, Unknown=0, NotChecked=0, Total=66306 [2018-07-23 15:25:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-23 15:25:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-23 15:25:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-23 15:25:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-23 15:25:53,310 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-23 15:25:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:53,310 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-23 15:25:53,310 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:25:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-23 15:25:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-23 15:25:53,311 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:53,311 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-23 15:25:53,311 INFO L414 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:53,312 INFO L82 PathProgramCache]: Analyzing trace with hash 555753587, now seen corresponding path program 129 times [2018-07-23 15:25:53,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:53,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:53,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:25:53,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:25:53,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:25:53,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:25:53,866 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-23 15:25:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:54,204 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-23 15:25:54,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:25:54,205 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-23 15:25:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:54,205 INFO L225 Difference]: With dead ends: 355 [2018-07-23 15:25:54,206 INFO L226 Difference]: Without dead ends: 353 [2018-07-23 15:25:54,207 INFO L573 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 [2018-07-23 15:25:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-23 15:25:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-23 15:25:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-23 15:25:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-23 15:25:54,232 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 348 [2018-07-23 15:25:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:54,232 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-23 15:25:54,232 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:25:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-23 15:25:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-23 15:25:54,233 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:54,233 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-23 15:25:54,233 INFO L414 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:54,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1566904679, now seen corresponding path program 130 times [2018-07-23 15:25:54,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:55,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:55,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:25:55,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:25:55,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:25:55,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:25:55,266 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 176 states. [2018-07-23 15:25:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:56,362 INFO L93 Difference]: Finished difference Result 533 states and 535 transitions. [2018-07-23 15:25:56,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:25:56,362 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 352 [2018-07-23 15:25:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:56,363 INFO L225 Difference]: With dead ends: 533 [2018-07-23 15:25:56,363 INFO L226 Difference]: Without dead ends: 355 [2018-07-23 15:25:56,367 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19140, Invalid=49242, Unknown=0, NotChecked=0, Total=68382 [2018-07-23 15:25:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-23 15:25:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-23 15:25:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-23 15:25:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-23 15:25:56,395 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-23 15:25:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:56,395 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-23 15:25:56,395 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:25:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-23 15:25:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 15:25:56,396 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:56,396 INFO L353 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-23 15:25:56,396 INFO L414 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 327789667, now seen corresponding path program 131 times [2018-07-23 15:25:56,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:57,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:57,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:25:57,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:25:57,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:25:57,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7920, Invalid=23232, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:25:57,456 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 177 states. [2018-07-23 15:25:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:58,317 INFO L93 Difference]: Finished difference Result 535 states and 537 transitions. [2018-07-23 15:25:58,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:25:58,317 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 354 [2018-07-23 15:25:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:58,318 INFO L225 Difference]: With dead ends: 535 [2018-07-23 15:25:58,319 INFO L226 Difference]: Without dead ends: 357 [2018-07-23 15:25:58,324 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19491, Invalid=49941, Unknown=0, NotChecked=0, Total=69432 [2018-07-23 15:25:58,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-23 15:25:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-23 15:25:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-23 15:25:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-23 15:25:58,367 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-23 15:25:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:58,367 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-23 15:25:58,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:25:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-23 15:25:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-23 15:25:58,369 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:58,369 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-23 15:25:58,369 INFO L414 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:58,370 INFO L82 PathProgramCache]: Analyzing trace with hash -755795873, now seen corresponding path program 132 times [2018-07-23 15:25:58,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:59,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:59,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:25:59,124 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:25:59,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:25:59,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:25:59,125 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-23 15:25:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:59,511 INFO L93 Difference]: Finished difference Result 363 states and 365 transitions. [2018-07-23 15:25:59,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:25:59,511 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-23 15:25:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:59,513 INFO L225 Difference]: With dead ends: 363 [2018-07-23 15:25:59,513 INFO L226 Difference]: Without dead ends: 361 [2018-07-23 15:25:59,515 INFO L573 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 [2018-07-23 15:25:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-23 15:25:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-23 15:25:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-23 15:25:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-23 15:25:59,545 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 356 [2018-07-23 15:25:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:59,545 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-23 15:25:59,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:25:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-23 15:25:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-23 15:25:59,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:59,546 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-23 15:25:59,546 INFO L414 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash -994929837, now seen corresponding path program 133 times [2018-07-23 15:25:59,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:00,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:00,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:26:00,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:26:00,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:26:00,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:26:00,701 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 180 states. [2018-07-23 15:26:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:01,547 INFO L93 Difference]: Finished difference Result 545 states and 547 transitions. [2018-07-23 15:26:01,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:26:01,547 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 360 [2018-07-23 15:26:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:01,548 INFO L225 Difference]: With dead ends: 545 [2018-07-23 15:26:01,548 INFO L226 Difference]: Without dead ends: 363 [2018-07-23 15:26:01,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20025, Invalid=51531, Unknown=0, NotChecked=0, Total=71556 [2018-07-23 15:26:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-23 15:26:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-23 15:26:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-23 15:26:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-23 15:26:01,577 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-23 15:26:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:01,577 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-23 15:26:01,577 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:26:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-23 15:26:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-23 15:26:01,579 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:01,579 INFO L353 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-23 15:26:01,579 INFO L414 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash 888828495, now seen corresponding path program 134 times [2018-07-23 15:26:01,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:02,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:02,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:26:02,630 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:26:02,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:26:02,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8280, Invalid=24300, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:26:02,633 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 181 states. [2018-07-23 15:26:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:03,670 INFO L93 Difference]: Finished difference Result 547 states and 549 transitions. [2018-07-23 15:26:03,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:26:03,670 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 362 [2018-07-23 15:26:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:03,671 INFO L225 Difference]: With dead ends: 547 [2018-07-23 15:26:03,671 INFO L226 Difference]: Without dead ends: 365 [2018-07-23 15:26:03,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11749 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20384, Invalid=52246, Unknown=0, NotChecked=0, Total=72630 [2018-07-23 15:26:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-23 15:26:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-23 15:26:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-23 15:26:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-23 15:26:03,706 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-23 15:26:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:03,706 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-23 15:26:03,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:26:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-23 15:26:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-23 15:26:03,708 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:03,708 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-23 15:26:03,708 INFO L414 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:03,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1295613365, now seen corresponding path program 135 times [2018-07-23 15:26:03,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:04,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:04,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:26:04,386 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:26:04,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:26:04,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:26:04,387 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-23 15:26:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:04,765 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2018-07-23 15:26:04,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:26:04,765 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-23 15:26:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:04,766 INFO L225 Difference]: With dead ends: 371 [2018-07-23 15:26:04,766 INFO L226 Difference]: Without dead ends: 369 [2018-07-23 15:26:04,768 INFO L573 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 [2018-07-23 15:26:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-23 15:26:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-23 15:26:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-23 15:26:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-23 15:26:04,794 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 364 [2018-07-23 15:26:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:04,795 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-23 15:26:04,795 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:26:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-23 15:26:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-23 15:26:04,796 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:04,796 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-23 15:26:04,796 INFO L414 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:04,796 INFO L82 PathProgramCache]: Analyzing trace with hash 248956735, now seen corresponding path program 136 times [2018-07-23 15:26:04,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:05,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:05,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:26:05,907 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:26:05,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:26:05,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:26:05,911 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 184 states. [2018-07-23 15:26:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:06,936 INFO L93 Difference]: Finished difference Result 557 states and 559 transitions. [2018-07-23 15:26:06,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:26:06,937 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 368 [2018-07-23 15:26:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:06,938 INFO L225 Difference]: With dead ends: 557 [2018-07-23 15:26:06,938 INFO L226 Difference]: Without dead ends: 371 [2018-07-23 15:26:06,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20930, Invalid=53872, Unknown=0, NotChecked=0, Total=74802 [2018-07-23 15:26:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-23 15:26:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-23 15:26:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-23 15:26:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-23 15:26:06,990 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-23 15:26:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:06,990 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-23 15:26:06,990 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:26:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-23 15:26:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-23 15:26:06,992 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:06,992 INFO L353 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-23 15:26:06,992 INFO L414 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1816270277, now seen corresponding path program 137 times [2018-07-23 15:26:06,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:08,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:08,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:26:08,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:26:08,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:26:08,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=25392, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:26:08,241 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 185 states. [2018-07-23 15:26:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:09,315 INFO L93 Difference]: Finished difference Result 559 states and 561 transitions. [2018-07-23 15:26:09,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:26:09,315 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 370 [2018-07-23 15:26:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:09,316 INFO L225 Difference]: With dead ends: 559 [2018-07-23 15:26:09,317 INFO L226 Difference]: Without dead ends: 373 [2018-07-23 15:26:09,321 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12286 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21297, Invalid=54603, Unknown=0, NotChecked=0, Total=75900 [2018-07-23 15:26:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-23 15:26:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-23 15:26:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-23 15:26:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-23 15:26:09,348 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-23 15:26:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:09,348 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-23 15:26:09,348 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:26:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-23 15:26:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-23 15:26:09,349 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:09,349 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-23 15:26:09,349 INFO L414 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:09,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2070429239, now seen corresponding path program 138 times [2018-07-23 15:26:09,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:10,032 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:10,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:26:10,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:26:10,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:26:10,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:26:10,033 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-23 15:26:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:10,427 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-23 15:26:10,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:26:10,428 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-23 15:26:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:10,429 INFO L225 Difference]: With dead ends: 379 [2018-07-23 15:26:10,429 INFO L226 Difference]: Without dead ends: 377 [2018-07-23 15:26:10,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:26:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-23 15:26:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-23 15:26:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-23 15:26:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-23 15:26:10,463 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 372 [2018-07-23 15:26:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:10,463 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-23 15:26:10,463 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:26:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-23 15:26:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-23 15:26:10,464 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:10,464 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-23 15:26:10,465 INFO L414 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash -148853461, now seen corresponding path program 139 times [2018-07-23 15:26:10,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:11,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:11,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:26:11,812 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:26:11,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:26:11,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:26:11,814 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 188 states. [2018-07-23 15:26:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:13,054 INFO L93 Difference]: Finished difference Result 569 states and 571 transitions. [2018-07-23 15:26:13,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:26:13,055 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 376 [2018-07-23 15:26:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:13,056 INFO L225 Difference]: With dead ends: 569 [2018-07-23 15:26:13,056 INFO L226 Difference]: Without dead ends: 379 [2018-07-23 15:26:13,060 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21855, Invalid=56265, Unknown=0, NotChecked=0, Total=78120 [2018-07-23 15:26:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-23 15:26:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-23 15:26:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-23 15:26:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-23 15:26:13,087 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-23 15:26:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:13,087 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-23 15:26:13,087 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:26:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-23 15:26:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-23 15:26:13,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:13,089 INFO L353 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-23 15:26:13,089 INFO L414 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1356655577, now seen corresponding path program 140 times [2018-07-23 15:26:13,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:14,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:14,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:26:14,275 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:26:14,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:26:14,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9024, Invalid=26508, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:26:14,278 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 189 states. [2018-07-23 15:26:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:15,465 INFO L93 Difference]: Finished difference Result 571 states and 573 transitions. [2018-07-23 15:26:15,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:26:15,465 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 378 [2018-07-23 15:26:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:15,466 INFO L225 Difference]: With dead ends: 571 [2018-07-23 15:26:15,467 INFO L226 Difference]: Without dead ends: 381 [2018-07-23 15:26:15,471 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22230, Invalid=57012, Unknown=0, NotChecked=0, Total=79242 [2018-07-23 15:26:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-23 15:26:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-23 15:26:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-23 15:26:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-23 15:26:15,516 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-23 15:26:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:15,517 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-23 15:26:15,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:26:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-23 15:26:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-23 15:26:15,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:15,519 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-23 15:26:15,520 INFO L414 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:15,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1881648163, now seen corresponding path program 141 times [2018-07-23 15:26:15,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:16,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:16,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:26:16,372 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:26:16,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:26:16,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:26:16,373 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-23 15:26:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:16,772 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-23 15:26:16,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:26:16,772 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-23 15:26:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:16,773 INFO L225 Difference]: With dead ends: 387 [2018-07-23 15:26:16,773 INFO L226 Difference]: Without dead ends: 385 [2018-07-23 15:26:16,775 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:26:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-23 15:26:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-23 15:26:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-23 15:26:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-23 15:26:16,804 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 380 [2018-07-23 15:26:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:16,804 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-23 15:26:16,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:26:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-23 15:26:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-23 15:26:16,806 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:16,806 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-23 15:26:16,806 INFO L414 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:16,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2124462825, now seen corresponding path program 142 times [2018-07-23 15:26:16,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:18,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:18,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:26:18,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:26:18,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:26:18,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:26:18,114 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 192 states. [2018-07-23 15:26:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:19,312 INFO L93 Difference]: Finished difference Result 581 states and 583 transitions. [2018-07-23 15:26:19,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:26:19,312 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 384 [2018-07-23 15:26:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:19,313 INFO L225 Difference]: With dead ends: 581 [2018-07-23 15:26:19,313 INFO L226 Difference]: Without dead ends: 387 [2018-07-23 15:26:19,316 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22800, Invalid=58710, Unknown=0, NotChecked=0, Total=81510 [2018-07-23 15:26:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-23 15:26:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-23 15:26:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-23 15:26:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-23 15:26:19,345 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-23 15:26:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:19,345 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-23 15:26:19,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:26:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-23 15:26:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-23 15:26:19,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:19,346 INFO L353 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-23 15:26:19,346 INFO L414 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1324937235, now seen corresponding path program 143 times [2018-07-23 15:26:19,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:20,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:20,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:26:20,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:26:20,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:26:20,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9408, Invalid=27648, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:26:20,600 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 193 states. [2018-07-23 15:26:21,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:21,957 INFO L93 Difference]: Finished difference Result 583 states and 585 transitions. [2018-07-23 15:26:21,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:26:21,957 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 386 [2018-07-23 15:26:21,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:21,958 INFO L225 Difference]: With dead ends: 583 [2018-07-23 15:26:21,958 INFO L226 Difference]: Without dead ends: 389 [2018-07-23 15:26:21,962 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23183, Invalid=59473, Unknown=0, NotChecked=0, Total=82656 [2018-07-23 15:26:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-23 15:26:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-23 15:26:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-23 15:26:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-23 15:26:22,010 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-23 15:26:22,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:22,011 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-23 15:26:22,011 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:26:22,011 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-23 15:26:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-23 15:26:22,012 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:22,013 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-23 15:26:22,013 INFO L414 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash 483642383, now seen corresponding path program 144 times [2018-07-23 15:26:22,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:23,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:23,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:26:23,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:26:23,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:26:23,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:26:23,063 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-23 15:26:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:23,475 INFO L93 Difference]: Finished difference Result 395 states and 397 transitions. [2018-07-23 15:26:23,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:26:23,476 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-23 15:26:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:23,476 INFO L225 Difference]: With dead ends: 395 [2018-07-23 15:26:23,476 INFO L226 Difference]: Without dead ends: 393 [2018-07-23 15:26:23,478 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:26:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-23 15:26:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-23 15:26:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-23 15:26:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-23 15:26:23,508 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 388 [2018-07-23 15:26:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:23,508 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-23 15:26:23,508 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:26:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-23 15:26:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-23 15:26:23,509 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:23,509 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-23 15:26:23,509 INFO L414 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1176400125, now seen corresponding path program 145 times [2018-07-23 15:26:23,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:25,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:25,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:26:25,020 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:26:25,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:26:25,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:26:25,023 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 196 states. [2018-07-23 15:26:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:26,426 INFO L93 Difference]: Finished difference Result 593 states and 595 transitions. [2018-07-23 15:26:26,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:26:26,426 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 392 [2018-07-23 15:26:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:26,427 INFO L225 Difference]: With dead ends: 593 [2018-07-23 15:26:26,427 INFO L226 Difference]: Without dead ends: 395 [2018-07-23 15:26:26,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23765, Invalid=61207, Unknown=0, NotChecked=0, Total=84972 [2018-07-23 15:26:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-23 15:26:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-23 15:26:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-23 15:26:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-23 15:26:26,461 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-23 15:26:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:26,461 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-23 15:26:26,461 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:26:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-23 15:26:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-23 15:26:26,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:26,525 INFO L353 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-23 15:26:26,525 INFO L414 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1133411839, now seen corresponding path program 146 times [2018-07-23 15:26:26,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:27,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:27,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:26:27,826 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:26:27,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:26:27,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9800, Invalid=28812, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:26:27,829 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 197 states. [2018-07-23 15:26:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:29,100 INFO L93 Difference]: Finished difference Result 595 states and 597 transitions. [2018-07-23 15:26:29,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:26:29,100 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 394 [2018-07-23 15:26:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:29,101 INFO L225 Difference]: With dead ends: 595 [2018-07-23 15:26:29,101 INFO L226 Difference]: Without dead ends: 397 [2018-07-23 15:26:29,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13969 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24156, Invalid=61986, Unknown=0, NotChecked=0, Total=86142 [2018-07-23 15:26:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-23 15:26:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-23 15:26:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-23 15:26:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-23 15:26:29,144 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-23 15:26:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:29,144 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-23 15:26:29,144 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:26:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-23 15:26:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-23 15:26:29,146 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:29,146 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-23 15:26:29,146 INFO L414 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:29,146 INFO L82 PathProgramCache]: Analyzing trace with hash 364617211, now seen corresponding path program 147 times [2018-07-23 15:26:29,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:30,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:30,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:26:30,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:26:30,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:26:30,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:26:30,011 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-23 15:26:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:30,468 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-23 15:26:30,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:26:30,468 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-23 15:26:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:30,469 INFO L225 Difference]: With dead ends: 403 [2018-07-23 15:26:30,469 INFO L226 Difference]: Without dead ends: 401 [2018-07-23 15:26:30,471 INFO L573 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 [2018-07-23 15:26:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-23 15:26:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-23 15:26:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-23 15:26:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-23 15:26:30,511 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 396 [2018-07-23 15:26:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:30,511 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-23 15:26:30,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:26:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-23 15:26:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-23 15:26:30,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:30,512 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-23 15:26:30,513 INFO L414 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1970703087, now seen corresponding path program 148 times [2018-07-23 15:26:30,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:31,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:31,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:26:31,923 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:26:31,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:26:31,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:26:31,926 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 200 states. [2018-07-23 15:26:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:33,483 INFO L93 Difference]: Finished difference Result 605 states and 607 transitions. [2018-07-23 15:26:33,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:26:33,483 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 400 [2018-07-23 15:26:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:33,484 INFO L225 Difference]: With dead ends: 605 [2018-07-23 15:26:33,484 INFO L226 Difference]: Without dead ends: 403 [2018-07-23 15:26:33,491 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=24750, Invalid=63756, Unknown=0, NotChecked=0, Total=88506 [2018-07-23 15:26:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-23 15:26:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-23 15:26:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-23 15:26:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-23 15:26:33,527 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-23 15:26:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:33,527 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-23 15:26:33,527 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:26:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-23 15:26:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-23 15:26:33,528 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:33,528 INFO L353 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-23 15:26:33,529 INFO L414 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash 632471019, now seen corresponding path program 149 times [2018-07-23 15:26:33,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:35,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:35,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:26:35,045 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:26:35,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:26:35,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10200, Invalid=30000, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:26:35,049 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 201 states. [2018-07-23 15:26:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:36,385 INFO L93 Difference]: Finished difference Result 607 states and 609 transitions. [2018-07-23 15:26:36,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:26:36,386 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 402 [2018-07-23 15:26:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:36,386 INFO L225 Difference]: With dead ends: 607 [2018-07-23 15:26:36,386 INFO L226 Difference]: Without dead ends: 405 [2018-07-23 15:26:36,391 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14554 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25149, Invalid=64551, Unknown=0, NotChecked=0, Total=89700 [2018-07-23 15:26:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-23 15:26:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-23 15:26:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-23 15:26:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-23 15:26:36,422 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-23 15:26:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:36,423 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-23 15:26:36,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:26:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-23 15:26:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-23 15:26:36,424 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:36,424 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-23 15:26:36,424 INFO L414 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:36,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324825, now seen corresponding path program 150 times [2018-07-23 15:26:36,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:37,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:37,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:26:37,250 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:26:37,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:26:37,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:26:37,251 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-23 15:26:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:37,759 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2018-07-23 15:26:37,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:26:37,760 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-23 15:26:37,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:37,760 INFO L225 Difference]: With dead ends: 411 [2018-07-23 15:26:37,760 INFO L226 Difference]: Without dead ends: 409 [2018-07-23 15:26:37,761 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:26:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-23 15:26:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-23 15:26:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-23 15:26:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-23 15:26:37,814 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 404 [2018-07-23 15:26:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:37,815 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-23 15:26:37,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:26:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-23 15:26:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-23 15:26:37,817 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:37,817 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-23 15:26:37,817 INFO L414 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:37,817 INFO L82 PathProgramCache]: Analyzing trace with hash 292370651, now seen corresponding path program 151 times [2018-07-23 15:26:37,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:39,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:39,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:26:39,398 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:26:39,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:26:39,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:26:39,401 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 204 states. [2018-07-23 15:26:40,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:40,888 INFO L93 Difference]: Finished difference Result 617 states and 619 transitions. [2018-07-23 15:26:40,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:26:40,888 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 408 [2018-07-23 15:26:40,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:40,889 INFO L225 Difference]: With dead ends: 617 [2018-07-23 15:26:40,889 INFO L226 Difference]: Without dead ends: 411 [2018-07-23 15:26:40,894 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25755, Invalid=66357, Unknown=0, NotChecked=0, Total=92112 [2018-07-23 15:26:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-23 15:26:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-23 15:26:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-23 15:26:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-23 15:26:40,926 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-23 15:26:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:40,926 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-23 15:26:40,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:26:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-23 15:26:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-23 15:26:40,927 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:40,927 INFO L353 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-23 15:26:40,927 INFO L414 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:40,928 INFO L82 PathProgramCache]: Analyzing trace with hash 380940247, now seen corresponding path program 152 times [2018-07-23 15:26:40,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:42,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:42,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:26:42,431 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:26:42,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:26:42,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10608, Invalid=31212, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:26:42,435 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 205 states. [2018-07-23 15:26:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:43,992 INFO L93 Difference]: Finished difference Result 619 states and 621 transitions. [2018-07-23 15:26:43,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:26:43,992 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 410 [2018-07-23 15:26:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:43,993 INFO L225 Difference]: With dead ends: 619 [2018-07-23 15:26:43,993 INFO L226 Difference]: Without dead ends: 413 [2018-07-23 15:26:44,000 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26162, Invalid=67168, Unknown=0, NotChecked=0, Total=93330 [2018-07-23 15:26:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-23 15:26:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-23 15:26:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-23 15:26:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-23 15:26:44,037 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-23 15:26:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:44,037 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-23 15:26:44,037 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:26:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-23 15:26:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-23 15:26:44,039 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:44,039 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-23 15:26:44,039 INFO L414 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -403023917, now seen corresponding path program 153 times [2018-07-23 15:26:44,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:44,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:44,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:26:44,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:26:44,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:26:44,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:26:44,911 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-23 15:26:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:45,441 INFO L93 Difference]: Finished difference Result 419 states and 421 transitions. [2018-07-23 15:26:45,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:26:45,441 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-23 15:26:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:45,442 INFO L225 Difference]: With dead ends: 419 [2018-07-23 15:26:45,442 INFO L226 Difference]: Without dead ends: 417 [2018-07-23 15:26:45,443 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:26:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-23 15:26:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-23 15:26:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-23 15:26:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-23 15:26:45,475 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 412 [2018-07-23 15:26:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:45,476 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-23 15:26:45,476 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:26:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-23 15:26:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-23 15:26:45,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:45,477 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-23 15:26:45,477 INFO L414 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 865376455, now seen corresponding path program 154 times [2018-07-23 15:26:45,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:46,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:46,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:26:46,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:26:46,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:26:46,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:26:46,962 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 208 states. [2018-07-23 15:26:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:48,560 INFO L93 Difference]: Finished difference Result 629 states and 631 transitions. [2018-07-23 15:26:48,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:26:48,560 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 416 [2018-07-23 15:26:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:48,561 INFO L225 Difference]: With dead ends: 629 [2018-07-23 15:26:48,561 INFO L226 Difference]: Without dead ends: 419 [2018-07-23 15:26:48,565 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26780, Invalid=69010, Unknown=0, NotChecked=0, Total=95790 [2018-07-23 15:26:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-23 15:26:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-23 15:26:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-23 15:26:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-23 15:26:48,601 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-23 15:26:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:48,601 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-23 15:26:48,601 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:26:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-23 15:26:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-23 15:26:48,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:48,603 INFO L353 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-23 15:26:48,603 INFO L414 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2140974141, now seen corresponding path program 155 times [2018-07-23 15:26:48,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:50,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:50,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:26:50,277 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:26:50,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:26:50,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11024, Invalid=32448, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:26:50,280 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 209 states. [2018-07-23 15:26:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:51,727 INFO L93 Difference]: Finished difference Result 631 states and 633 transitions. [2018-07-23 15:26:51,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:26:51,727 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 418 [2018-07-23 15:26:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:51,728 INFO L225 Difference]: With dead ends: 631 [2018-07-23 15:26:51,728 INFO L226 Difference]: Without dead ends: 421 [2018-07-23 15:26:51,733 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27195, Invalid=69837, Unknown=0, NotChecked=0, Total=97032 [2018-07-23 15:26:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-23 15:26:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-23 15:26:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-23 15:26:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-23 15:26:51,766 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-23 15:26:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:51,767 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-23 15:26:51,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:26:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-23 15:26:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-23 15:26:51,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:51,768 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-23 15:26:51,768 INFO L414 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:51,768 INFO L82 PathProgramCache]: Analyzing trace with hash -730906689, now seen corresponding path program 156 times [2018-07-23 15:26:51,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:52,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:52,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:26:52,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:26:52,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:26:52,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:26:52,728 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-23 15:26:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:53,276 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-23 15:26:53,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:26:53,276 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-23 15:26:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:53,277 INFO L225 Difference]: With dead ends: 427 [2018-07-23 15:26:53,277 INFO L226 Difference]: Without dead ends: 425 [2018-07-23 15:26:53,279 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:26:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-23 15:26:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-23 15:26:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-23 15:26:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-23 15:26:53,318 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 420 [2018-07-23 15:26:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:53,318 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-23 15:26:53,318 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:26:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-23 15:26:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-23 15:26:53,319 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:53,319 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-23 15:26:53,320 INFO L414 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1975801165, now seen corresponding path program 157 times [2018-07-23 15:26:53,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:54,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:54,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:26:54,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:26:54,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:26:54,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:26:54,891 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 212 states. [2018-07-23 15:26:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:56,705 INFO L93 Difference]: Finished difference Result 641 states and 643 transitions. [2018-07-23 15:26:56,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:26:56,706 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 424 [2018-07-23 15:26:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:56,706 INFO L225 Difference]: With dead ends: 641 [2018-07-23 15:26:56,706 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:26:56,712 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27825, Invalid=71715, Unknown=0, NotChecked=0, Total=99540 [2018-07-23 15:26:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:26:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-23 15:26:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-23 15:26:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-23 15:26:56,746 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-23 15:26:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:56,746 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-23 15:26:56,746 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:26:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-23 15:26:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-23 15:26:56,747 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:56,747 INFO L353 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-23 15:26:56,747 INFO L414 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -720524881, now seen corresponding path program 158 times [2018-07-23 15:26:56,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:58,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:58,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:26:58,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:26:58,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:26:58,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11448, Invalid=33708, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:26:58,324 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 213 states. [2018-07-23 15:27:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:00,091 INFO L93 Difference]: Finished difference Result 643 states and 645 transitions. [2018-07-23 15:27:00,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:27:00,091 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 426 [2018-07-23 15:27:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:00,092 INFO L225 Difference]: With dead ends: 643 [2018-07-23 15:27:00,092 INFO L226 Difference]: Without dead ends: 429 [2018-07-23 15:27:00,097 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16381 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28248, Invalid=72558, Unknown=0, NotChecked=0, Total=100806 [2018-07-23 15:27:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-23 15:27:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-23 15:27:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-23 15:27:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-23 15:27:00,132 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-23 15:27:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:00,132 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-23 15:27:00,132 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:27:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-23 15:27:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-23 15:27:00,134 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:00,135 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-23 15:27:00,135 INFO L414 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:00,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1285826133, now seen corresponding path program 159 times [2018-07-23 15:27:00,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:01,176 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:01,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:27:01,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:27:01,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:27:01,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:27:01,177 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-23 15:27:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:01,675 INFO L93 Difference]: Finished difference Result 435 states and 437 transitions. [2018-07-23 15:27:01,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:27:01,676 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-23 15:27:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:01,677 INFO L225 Difference]: With dead ends: 435 [2018-07-23 15:27:01,677 INFO L226 Difference]: Without dead ends: 433 [2018-07-23 15:27:01,679 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:27:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-23 15:27:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-23 15:27:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-23 15:27:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-23 15:27:01,715 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 428 [2018-07-23 15:27:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:01,715 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-23 15:27:01,715 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:27:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-23 15:27:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-23 15:27:01,716 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:01,716 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 107, 106, 1, 1, 1, 1] [2018-07-23 15:27:01,717 INFO L414 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1942917473, now seen corresponding path program 160 times [2018-07-23 15:27:01,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22898 backedges. 11556 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:03,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:03,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-23 15:27:03,400 INFO L450 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-23 15:27:03,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-23 15:27:03,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:27:03,404 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 216 states. [2018-07-23 15:27:05,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:05,185 INFO L93 Difference]: Finished difference Result 653 states and 655 transitions. [2018-07-23 15:27:05,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-23 15:27:05,186 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 432 [2018-07-23 15:27:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:05,187 INFO L225 Difference]: With dead ends: 653 [2018-07-23 15:27:05,187 INFO L226 Difference]: Without dead ends: 435 [2018-07-23 15:27:05,189 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28890, Invalid=74472, Unknown=0, NotChecked=0, Total=103362 [2018-07-23 15:27:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-23 15:27:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-23 15:27:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-23 15:27:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-23 15:27:05,224 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-23 15:27:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:05,224 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-23 15:27:05,224 INFO L472 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-23 15:27:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-23 15:27:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-23 15:27:05,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:05,226 INFO L353 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-23 15:27:05,226 INFO L414 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:05,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1333965211, now seen corresponding path program 161 times [2018-07-23 15:27:05,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 11556 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:06,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:06,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-23 15:27:06,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-23 15:27:06,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-23 15:27:06,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11880, Invalid=34992, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:27:06,902 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 217 states. [2018-07-23 15:27:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:08,281 INFO L93 Difference]: Finished difference Result 655 states and 657 transitions. [2018-07-23 15:27:08,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:27:08,281 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 434 [2018-07-23 15:27:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:08,282 INFO L225 Difference]: With dead ends: 655 [2018-07-23 15:27:08,282 INFO L226 Difference]: Without dead ends: 437 [2018-07-23 15:27:08,288 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17014 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29321, Invalid=75331, Unknown=0, NotChecked=0, Total=104652 [2018-07-23 15:27:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-23 15:27:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-23 15:27:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-23 15:27:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-23 15:27:08,323 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-23 15:27:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:08,323 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-23 15:27:08,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-23 15:27:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-23 15:27:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-23 15:27:08,325 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:08,325 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 108, 107, 1, 1, 1, 1] [2018-07-23 15:27:08,325 INFO L414 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2087770729, now seen corresponding path program 162 times [2018-07-23 15:27:08,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23328 backedges. 11772 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:09,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:09,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:27:09,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:27:09,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:27:09,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:27:09,332 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 113 states. [2018-07-23 15:27:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:09,879 INFO L93 Difference]: Finished difference Result 443 states and 445 transitions. [2018-07-23 15:27:09,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:27:09,879 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 436 [2018-07-23 15:27:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:09,880 INFO L225 Difference]: With dead ends: 443 [2018-07-23 15:27:09,880 INFO L226 Difference]: Without dead ends: 441 [2018-07-23 15:27:09,883 INFO L573 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 [2018-07-23 15:27:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-23 15:27:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-23 15:27:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-23 15:27:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-23 15:27:09,918 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 436 [2018-07-23 15:27:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:09,919 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-23 15:27:09,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:27:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-23 15:27:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-23 15:27:09,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:09,920 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 109, 108, 1, 1, 1, 1] [2018-07-23 15:27:09,920 INFO L414 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 952427659, now seen corresponding path program 163 times [2018-07-23 15:27:09,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 23762 backedges. 11990 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:11,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:11,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-23 15:27:11,712 INFO L450 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-23 15:27:11,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-23 15:27:11,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:27:11,714 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 220 states. [2018-07-23 15:27:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:13,280 INFO L93 Difference]: Finished difference Result 665 states and 667 transitions. [2018-07-23 15:27:13,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-23 15:27:13,281 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 440 [2018-07-23 15:27:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:13,281 INFO L225 Difference]: With dead ends: 665 [2018-07-23 15:27:13,282 INFO L226 Difference]: Without dead ends: 443 [2018-07-23 15:27:13,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17550 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29975, Invalid=77281, Unknown=0, NotChecked=0, Total=107256 [2018-07-23 15:27:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-23 15:27:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-23 15:27:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-23 15:27:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-23 15:27:13,326 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 440 [2018-07-23 15:27:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:13,327 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-23 15:27:13,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-23 15:27:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-23 15:27:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-23 15:27:13,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:13,328 INFO L353 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-07-23 15:27:13,328 INFO L414 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1290703993, now seen corresponding path program 164 times [2018-07-23 15:27:13,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11990 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:15,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:15,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-23 15:27:15,063 INFO L450 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-23 15:27:15,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-23 15:27:15,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12320, Invalid=36300, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:27:15,067 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 221 states. [2018-07-23 15:27:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:16,743 INFO L93 Difference]: Finished difference Result 667 states and 669 transitions. [2018-07-23 15:27:16,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:27:16,743 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 442 [2018-07-23 15:27:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:16,744 INFO L225 Difference]: With dead ends: 667 [2018-07-23 15:27:16,744 INFO L226 Difference]: Without dead ends: 445 [2018-07-23 15:27:16,748 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17659 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30414, Invalid=78156, Unknown=0, NotChecked=0, Total=108570 [2018-07-23 15:27:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-23 15:27:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-23 15:27:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-23 15:27:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 446 transitions. [2018-07-23 15:27:16,784 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 446 transitions. Word has length 442 [2018-07-23 15:27:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:16,784 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 446 transitions. [2018-07-23 15:27:16,785 INFO L472 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-23 15:27:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 446 transitions. [2018-07-23 15:27:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-23 15:27:16,786 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:16,786 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 110, 109, 1, 1, 1, 1] [2018-07-23 15:27:16,786 INFO L414 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:16,786 INFO L82 PathProgramCache]: Analyzing trace with hash -866638973, now seen corresponding path program 165 times [2018-07-23 15:27:16,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 24200 backedges. 12210 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:17,897 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:17,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:27:17,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:27:17,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:27:17,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:27:17,899 INFO L87 Difference]: Start difference. First operand 445 states and 446 transitions. Second operand 115 states. [2018-07-23 15:27:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:18,468 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-23 15:27:18,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:27:18,468 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 444 [2018-07-23 15:27:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:18,469 INFO L225 Difference]: With dead ends: 451 [2018-07-23 15:27:18,470 INFO L226 Difference]: Without dead ends: 449 [2018-07-23 15:27:18,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:27:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-23 15:27:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-23 15:27:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-23 15:27:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2018-07-23 15:27:18,511 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 444 [2018-07-23 15:27:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:18,511 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2018-07-23 15:27:18,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:27:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2018-07-23 15:27:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-23 15:27:18,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:18,513 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 111, 110, 1, 1, 1, 1] [2018-07-23 15:27:18,513 INFO L414 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash -674952073, now seen corresponding path program 166 times [2018-07-23 15:27:18,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24642 backedges. 12432 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:20,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:20,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-23 15:27:20,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-23 15:27:20,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-23 15:27:20,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12655, Invalid=37297, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:27:20,447 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand 224 states. [2018-07-23 15:27:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:22,076 INFO L93 Difference]: Finished difference Result 677 states and 679 transitions. [2018-07-23 15:27:22,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-23 15:27:22,076 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 448 [2018-07-23 15:27:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:22,077 INFO L225 Difference]: With dead ends: 677 [2018-07-23 15:27:22,077 INFO L226 Difference]: Without dead ends: 451 [2018-07-23 15:27:22,083 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31080, Invalid=80142, Unknown=0, NotChecked=0, Total=111222 [2018-07-23 15:27:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-23 15:27:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-23 15:27:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-23 15:27:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-07-23 15:27:22,120 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 448 [2018-07-23 15:27:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:22,120 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-07-23 15:27:22,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-23 15:27:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-07-23 15:27:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-23 15:27:22,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:22,122 INFO L353 BasicCegarLoop]: trace histogram [112, 112, 111, 111, 1, 1, 1, 1] [2018-07-23 15:27:22,122 INFO L414 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:22,122 INFO L82 PathProgramCache]: Analyzing trace with hash 193517427, now seen corresponding path program 167 times [2018-07-23 15:27:22,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 12432 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:24,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:24,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-23 15:27:24,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-23 15:27:24,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-23 15:27:24,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12768, Invalid=37632, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:27:24,007 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 225 states. [2018-07-23 15:27:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:25,437 INFO L93 Difference]: Finished difference Result 679 states and 681 transitions. [2018-07-23 15:27:25,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:27:25,437 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 450 [2018-07-23 15:27:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:25,438 INFO L225 Difference]: With dead ends: 679 [2018-07-23 15:27:25,438 INFO L226 Difference]: Without dead ends: 453 [2018-07-23 15:27:25,443 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18316 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=31527, Invalid=81033, Unknown=0, NotChecked=0, Total=112560 [2018-07-23 15:27:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-23 15:27:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-23 15:27:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-23 15:27:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 454 transitions. [2018-07-23 15:27:25,481 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 454 transitions. Word has length 450 [2018-07-23 15:27:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:25,481 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 454 transitions. [2018-07-23 15:27:25,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-23 15:27:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 454 transitions. [2018-07-23 15:27:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-23 15:27:25,482 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:25,482 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 112, 111, 1, 1, 1, 1] [2018-07-23 15:27:25,482 INFO L414 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:25,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1569051503, now seen corresponding path program 168 times [2018-07-23 15:27:25,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 25088 backedges. 12656 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:26,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:26,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:27:26,681 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:27:26,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:27:26,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:27:26,682 INFO L87 Difference]: Start difference. First operand 453 states and 454 transitions. Second operand 117 states. [2018-07-23 15:27:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:27,256 INFO L93 Difference]: Finished difference Result 459 states and 461 transitions. [2018-07-23 15:27:27,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-23 15:27:27,256 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 452 [2018-07-23 15:27:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:27,257 INFO L225 Difference]: With dead ends: 459 [2018-07-23 15:27:27,257 INFO L226 Difference]: Without dead ends: 457 [2018-07-23 15:27:27,259 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12769 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2018-07-23 15:27:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-07-23 15:27:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-07-23 15:27:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-07-23 15:27:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2018-07-23 15:27:27,297 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 452 [2018-07-23 15:27:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:27,298 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2018-07-23 15:27:27,298 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:27:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2018-07-23 15:27:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-23 15:27:27,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:27,299 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 113, 112, 1, 1, 1, 1] [2018-07-23 15:27:27,299 INFO L414 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1182734749, now seen corresponding path program 169 times [2018-07-23 15:27:27,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25538 backedges. 12882 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:29,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:29,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-23 15:27:29,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-23 15:27:29,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-23 15:27:29,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13109, Invalid=38647, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:27:29,181 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand 228 states. [2018-07-23 15:27:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:30,690 INFO L93 Difference]: Finished difference Result 689 states and 691 transitions. [2018-07-23 15:27:30,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-23 15:27:30,690 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 456 [2018-07-23 15:27:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:30,691 INFO L225 Difference]: With dead ends: 689 [2018-07-23 15:27:30,691 INFO L226 Difference]: Without dead ends: 459 [2018-07-23 15:27:30,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18872 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=32205, Invalid=83055, Unknown=0, NotChecked=0, Total=115260 [2018-07-23 15:27:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-23 15:27:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-07-23 15:27:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-07-23 15:27:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 460 transitions. [2018-07-23 15:27:30,732 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 460 transitions. Word has length 456 [2018-07-23 15:27:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:30,733 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 460 transitions. [2018-07-23 15:27:30,733 INFO L472 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-23 15:27:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 460 transitions. [2018-07-23 15:27:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-23 15:27:30,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:30,734 INFO L353 BasicCegarLoop]: trace histogram [114, 114, 113, 113, 1, 1, 1, 1] [2018-07-23 15:27:30,734 INFO L414 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:30,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1832383839, now seen corresponding path program 170 times [2018-07-23 15:27:30,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 12882 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:32,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:32,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-23 15:27:32,649 INFO L450 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-23 15:27:32,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-23 15:27:32,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13224, Invalid=38988, Unknown=0, NotChecked=0, Total=52212 [2018-07-23 15:27:32,653 INFO L87 Difference]: Start difference. First operand 459 states and 460 transitions. Second operand 229 states. [2018-07-23 15:27:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:34,409 INFO L93 Difference]: Finished difference Result 691 states and 693 transitions. [2018-07-23 15:27:34,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-23 15:27:34,410 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 458 [2018-07-23 15:27:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:34,410 INFO L225 Difference]: With dead ends: 691 [2018-07-23 15:27:34,410 INFO L226 Difference]: Without dead ends: 461 [2018-07-23 15:27:34,413 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18985 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=32660, Invalid=83962, Unknown=0, NotChecked=0, Total=116622 [2018-07-23 15:27:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-07-23 15:27:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-07-23 15:27:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-23 15:27:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2018-07-23 15:27:34,451 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 458 [2018-07-23 15:27:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:34,451 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2018-07-23 15:27:34,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-23 15:27:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2018-07-23 15:27:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-23 15:27:34,453 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:34,453 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 114, 113, 1, 1, 1, 1] [2018-07-23 15:27:34,453 INFO L414 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:34,453 INFO L82 PathProgramCache]: Analyzing trace with hash 258422107, now seen corresponding path program 171 times [2018-07-23 15:27:34,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25992 backedges. 13110 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:35,651 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:35,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:27:35,652 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:27:35,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:27:35,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:27:35,653 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand 119 states. [2018-07-23 15:27:36,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:36,272 INFO L93 Difference]: Finished difference Result 467 states and 469 transitions. [2018-07-23 15:27:36,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-23 15:27:36,272 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 460 [2018-07-23 15:27:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:36,273 INFO L225 Difference]: With dead ends: 467 [2018-07-23 15:27:36,273 INFO L226 Difference]: Without dead ends: 465 [2018-07-23 15:27:36,276 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20476, Invalid=34046, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:27:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2018-07-23 15:27:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2018-07-23 15:27:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2018-07-23 15:27:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2018-07-23 15:27:36,315 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 460 [2018-07-23 15:27:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:36,316 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2018-07-23 15:27:36,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:27:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2018-07-23 15:27:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-07-23 15:27:36,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:36,317 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 115, 114, 1, 1, 1, 1] [2018-07-23 15:27:36,318 INFO L414 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash -154701233, now seen corresponding path program 172 times [2018-07-23 15:27:36,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 26450 backedges. 13340 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:38,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:38,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-23 15:27:38,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-23 15:27:38,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-23 15:27:38,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13571, Invalid=40021, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:27:38,333 INFO L87 Difference]: Start difference. First operand 465 states and 466 transitions. Second operand 232 states. [2018-07-23 15:27:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:40,282 INFO L93 Difference]: Finished difference Result 701 states and 703 transitions. [2018-07-23 15:27:40,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-23 15:27:40,283 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 464 [2018-07-23 15:27:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:40,283 INFO L225 Difference]: With dead ends: 701 [2018-07-23 15:27:40,284 INFO L226 Difference]: Without dead ends: 467 [2018-07-23 15:27:40,290 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19551 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33350, Invalid=86020, Unknown=0, NotChecked=0, Total=119370 [2018-07-23 15:27:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-07-23 15:27:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-07-23 15:27:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-07-23 15:27:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 468 transitions. [2018-07-23 15:27:40,329 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 468 transitions. Word has length 464 [2018-07-23 15:27:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:40,329 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 468 transitions. [2018-07-23 15:27:40,329 INFO L472 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-23 15:27:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 468 transitions. [2018-07-23 15:27:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-23 15:27:40,331 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:40,331 INFO L353 BasicCegarLoop]: trace histogram [116, 116, 115, 115, 1, 1, 1, 1] [2018-07-23 15:27:40,331 INFO L414 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1259485877, now seen corresponding path program 173 times [2018-07-23 15:27:40,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13340 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:42,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:42,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-23 15:27:42,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-23 15:27:42,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-23 15:27:42,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13688, Invalid=40368, Unknown=0, NotChecked=0, Total=54056 [2018-07-23 15:27:42,425 INFO L87 Difference]: Start difference. First operand 467 states and 468 transitions. Second operand 233 states. [2018-07-23 15:27:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:44,286 INFO L93 Difference]: Finished difference Result 703 states and 705 transitions. [2018-07-23 15:27:44,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-23 15:27:44,286 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 466 [2018-07-23 15:27:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:44,287 INFO L225 Difference]: With dead ends: 703 [2018-07-23 15:27:44,287 INFO L226 Difference]: Without dead ends: 469 [2018-07-23 15:27:44,293 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19666 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33813, Invalid=86943, Unknown=0, NotChecked=0, Total=120756 [2018-07-23 15:27:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-07-23 15:27:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2018-07-23 15:27:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-07-23 15:27:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 470 transitions. [2018-07-23 15:27:44,332 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 470 transitions. Word has length 466 [2018-07-23 15:27:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:44,333 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 470 transitions. [2018-07-23 15:27:44,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-23 15:27:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 470 transitions. [2018-07-23 15:27:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-07-23 15:27:44,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:44,334 INFO L353 BasicCegarLoop]: trace histogram [117, 116, 116, 115, 1, 1, 1, 1] [2018-07-23 15:27:44,334 INFO L414 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2100606649, now seen corresponding path program 174 times [2018-07-23 15:27:44,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 26912 backedges. 13572 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:45,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:45,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:27:45,717 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:27:45,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:27:45,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:27:45,718 INFO L87 Difference]: Start difference. First operand 469 states and 470 transitions. Second operand 121 states. [2018-07-23 15:27:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:46,403 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2018-07-23 15:27:46,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-23 15:27:46,403 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 468 [2018-07-23 15:27:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:46,404 INFO L225 Difference]: With dead ends: 475 [2018-07-23 15:27:46,404 INFO L226 Difference]: Without dead ends: 473 [2018-07-23 15:27:46,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13689 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21183, Invalid=35223, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:27:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-07-23 15:27:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-07-23 15:27:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-07-23 15:27:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2018-07-23 15:27:46,468 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 468 [2018-07-23 15:27:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:46,469 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2018-07-23 15:27:46,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:27:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2018-07-23 15:27:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-07-23 15:27:46,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:46,471 INFO L353 BasicCegarLoop]: trace histogram [118, 117, 117, 116, 1, 1, 1, 1] [2018-07-23 15:27:46,471 INFO L414 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:46,472 INFO L82 PathProgramCache]: Analyzing trace with hash 820490299, now seen corresponding path program 175 times [2018-07-23 15:27:46,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 27378 backedges. 13806 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:48,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:48,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-23 15:27:48,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-23 15:27:48,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-23 15:27:48,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14041, Invalid=41419, Unknown=0, NotChecked=0, Total=55460 [2018-07-23 15:27:48,543 INFO L87 Difference]: Start difference. First operand 473 states and 474 transitions. Second operand 236 states. [2018-07-23 15:27:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:50,225 INFO L93 Difference]: Finished difference Result 713 states and 715 transitions. [2018-07-23 15:27:50,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-23 15:27:50,226 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 472 [2018-07-23 15:27:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:50,226 INFO L225 Difference]: With dead ends: 713 [2018-07-23 15:27:50,227 INFO L226 Difference]: Without dead ends: 475 [2018-07-23 15:27:50,231 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20242 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=34515, Invalid=89037, Unknown=0, NotChecked=0, Total=123552 [2018-07-23 15:27:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-07-23 15:27:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-07-23 15:27:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-07-23 15:27:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 476 transitions. [2018-07-23 15:27:50,272 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 476 transitions. Word has length 472 [2018-07-23 15:27:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:50,272 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 476 transitions. [2018-07-23 15:27:50,272 INFO L472 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-23 15:27:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 476 transitions. [2018-07-23 15:27:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-07-23 15:27:50,274 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:50,274 INFO L353 BasicCegarLoop]: trace histogram [118, 118, 117, 117, 1, 1, 1, 1] [2018-07-23 15:27:50,274 INFO L414 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1207519031, now seen corresponding path program 176 times [2018-07-23 15:27:50,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13806 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:52,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:52,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-23 15:27:52,387 INFO L450 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-23 15:27:52,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-23 15:27:52,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14160, Invalid=41772, Unknown=0, NotChecked=0, Total=55932 [2018-07-23 15:27:52,392 INFO L87 Difference]: Start difference. First operand 475 states and 476 transitions. Second operand 237 states. [2018-07-23 15:27:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:53,926 INFO L93 Difference]: Finished difference Result 715 states and 717 transitions. [2018-07-23 15:27:53,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-23 15:27:53,927 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 474 [2018-07-23 15:27:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:53,927 INFO L225 Difference]: With dead ends: 715 [2018-07-23 15:27:53,927 INFO L226 Difference]: Without dead ends: 477 [2018-07-23 15:27:53,932 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20359 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=34986, Invalid=89976, Unknown=0, NotChecked=0, Total=124962 [2018-07-23 15:27:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2018-07-23 15:27:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2018-07-23 15:27:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-07-23 15:27:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 478 transitions. [2018-07-23 15:27:53,973 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 478 transitions. Word has length 474 [2018-07-23 15:27:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:53,973 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 478 transitions. [2018-07-23 15:27:53,973 INFO L472 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-23 15:27:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 478 transitions. [2018-07-23 15:27:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-07-23 15:27:53,975 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:53,975 INFO L353 BasicCegarLoop]: trace histogram [119, 118, 118, 117, 1, 1, 1, 1] [2018-07-23 15:27:53,975 INFO L414 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:53,975 INFO L82 PathProgramCache]: Analyzing trace with hash -520024269, now seen corresponding path program 177 times [2018-07-23 15:27:53,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 27848 backedges. 14042 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:55,287 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:55,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:27:55,288 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:27:55,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:27:55,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:27:55,289 INFO L87 Difference]: Start difference. First operand 477 states and 478 transitions. Second operand 123 states. [2018-07-23 15:27:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:55,960 INFO L93 Difference]: Finished difference Result 483 states and 485 transitions. [2018-07-23 15:27:55,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-23 15:27:55,960 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 476 [2018-07-23 15:27:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:55,961 INFO L225 Difference]: With dead ends: 483 [2018-07-23 15:27:55,961 INFO L226 Difference]: Without dead ends: 481 [2018-07-23 15:27:55,964 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21902, Invalid=36420, Unknown=0, NotChecked=0, Total=58322 [2018-07-23 15:27:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-07-23 15:27:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2018-07-23 15:27:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-07-23 15:27:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2018-07-23 15:27:56,005 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 476 [2018-07-23 15:27:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:56,006 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2018-07-23 15:27:56,006 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:27:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2018-07-23 15:27:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-07-23 15:27:56,007 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:56,007 INFO L353 BasicCegarLoop]: trace histogram [120, 119, 119, 118, 1, 1, 1, 1] [2018-07-23 15:27:56,007 INFO L414 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1370529831, now seen corresponding path program 178 times [2018-07-23 15:27:56,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 28322 backedges. 14280 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:58,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:58,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-23 15:27:58,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-23 15:27:58,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-23 15:27:58,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14519, Invalid=42841, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:27:58,079 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand 240 states. [2018-07-23 15:28:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:00,063 INFO L93 Difference]: Finished difference Result 725 states and 727 transitions. [2018-07-23 15:28:00,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-23 15:28:00,063 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 480 [2018-07-23 15:28:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:00,064 INFO L225 Difference]: With dead ends: 725 [2018-07-23 15:28:00,064 INFO L226 Difference]: Without dead ends: 483 [2018-07-23 15:28:00,071 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20945 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=35700, Invalid=92106, Unknown=0, NotChecked=0, Total=127806 [2018-07-23 15:28:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-07-23 15:28:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-07-23 15:28:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-07-23 15:28:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 484 transitions. [2018-07-23 15:28:00,113 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 484 transitions. Word has length 480 [2018-07-23 15:28:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:00,113 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 484 transitions. [2018-07-23 15:28:00,113 INFO L472 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-23 15:28:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 484 transitions. [2018-07-23 15:28:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-07-23 15:28:00,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:00,115 INFO L353 BasicCegarLoop]: trace histogram [120, 120, 119, 119, 1, 1, 1, 1] [2018-07-23 15:28:00,115 INFO L414 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash -735479005, now seen corresponding path program 179 times [2018-07-23 15:28:00,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 14280 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:02,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:02,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-23 15:28:02,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-23 15:28:02,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-23 15:28:02,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14640, Invalid=43200, Unknown=0, NotChecked=0, Total=57840 [2018-07-23 15:28:02,350 INFO L87 Difference]: Start difference. First operand 483 states and 484 transitions. Second operand 241 states. [2018-07-23 15:28:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:04,478 INFO L93 Difference]: Finished difference Result 727 states and 729 transitions. [2018-07-23 15:28:04,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-23 15:28:04,479 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 482 [2018-07-23 15:28:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:04,480 INFO L225 Difference]: With dead ends: 727 [2018-07-23 15:28:04,480 INFO L226 Difference]: Without dead ends: 485 [2018-07-23 15:28:04,487 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21064 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=36179, Invalid=93061, Unknown=0, NotChecked=0, Total=129240 [2018-07-23 15:28:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-07-23 15:28:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2018-07-23 15:28:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-07-23 15:28:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 486 transitions. [2018-07-23 15:28:04,602 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 486 transitions. Word has length 482 [2018-07-23 15:28:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:04,602 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 486 transitions. [2018-07-23 15:28:04,602 INFO L472 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-23 15:28:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 486 transitions. [2018-07-23 15:28:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-23 15:28:04,604 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:04,604 INFO L353 BasicCegarLoop]: trace histogram [121, 120, 120, 119, 1, 1, 1, 1] [2018-07-23 15:28:04,604 INFO L414 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1680373985, now seen corresponding path program 180 times [2018-07-23 15:28:04,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 28800 backedges. 14520 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:06,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:06,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:28:06,029 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:28:06,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:28:06,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:28:06,030 INFO L87 Difference]: Start difference. First operand 485 states and 486 transitions. Second operand 125 states. [2018-07-23 15:28:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:06,767 INFO L93 Difference]: Finished difference Result 491 states and 493 transitions. [2018-07-23 15:28:06,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-23 15:28:06,767 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 484 [2018-07-23 15:28:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:06,768 INFO L225 Difference]: With dead ends: 491 [2018-07-23 15:28:06,768 INFO L226 Difference]: Without dead ends: 489 [2018-07-23 15:28:06,771 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14641 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22633, Invalid=37637, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:28:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2018-07-23 15:28:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2018-07-23 15:28:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-07-23 15:28:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2018-07-23 15:28:06,814 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 484 [2018-07-23 15:28:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:06,814 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2018-07-23 15:28:06,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:28:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2018-07-23 15:28:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-07-23 15:28:06,816 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:06,816 INFO L353 BasicCegarLoop]: trace histogram [122, 121, 121, 120, 1, 1, 1, 1] [2018-07-23 15:28:06,816 INFO L414 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1265713683, now seen corresponding path program 181 times [2018-07-23 15:28:06,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 29282 backedges. 14762 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:09,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:09,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-23 15:28:09,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-23 15:28:09,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-23 15:28:09,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15005, Invalid=44287, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:28:09,243 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand 244 states. [2018-07-23 15:28:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:11,253 INFO L93 Difference]: Finished difference Result 737 states and 739 transitions. [2018-07-23 15:28:11,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-23 15:28:11,253 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 488 [2018-07-23 15:28:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:11,254 INFO L225 Difference]: With dead ends: 737 [2018-07-23 15:28:11,254 INFO L226 Difference]: Without dead ends: 491 [2018-07-23 15:28:11,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21660 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=36905, Invalid=95227, Unknown=0, NotChecked=0, Total=132132 [2018-07-23 15:28:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-07-23 15:28:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-07-23 15:28:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-07-23 15:28:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2018-07-23 15:28:11,315 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 488 [2018-07-23 15:28:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:11,315 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2018-07-23 15:28:11,315 INFO L472 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-23 15:28:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2018-07-23 15:28:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-07-23 15:28:11,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:11,317 INFO L353 BasicCegarLoop]: trace histogram [122, 122, 121, 121, 1, 1, 1, 1] [2018-07-23 15:28:11,317 INFO L414 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 265117967, now seen corresponding path program 182 times [2018-07-23 15:28:11,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 14762 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:13,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:13,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-23 15:28:13,830 INFO L450 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-23 15:28:13,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-23 15:28:13,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15128, Invalid=44652, Unknown=0, NotChecked=0, Total=59780 [2018-07-23 15:28:13,834 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand 245 states. [2018-07-23 15:28:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:16,207 INFO L93 Difference]: Finished difference Result 739 states and 741 transitions. [2018-07-23 15:28:16,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-23 15:28:16,207 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 490 [2018-07-23 15:28:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:16,208 INFO L225 Difference]: With dead ends: 739 [2018-07-23 15:28:16,208 INFO L226 Difference]: Without dead ends: 493 [2018-07-23 15:28:16,215 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21781 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37392, Invalid=96198, Unknown=0, NotChecked=0, Total=133590 [2018-07-23 15:28:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-07-23 15:28:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2018-07-23 15:28:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-07-23 15:28:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 494 transitions. [2018-07-23 15:28:16,260 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 494 transitions. Word has length 490 [2018-07-23 15:28:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:16,261 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 494 transitions. [2018-07-23 15:28:16,261 INFO L472 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-23 15:28:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 494 transitions. [2018-07-23 15:28:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-07-23 15:28:16,262 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:16,262 INFO L353 BasicCegarLoop]: trace histogram [123, 122, 122, 121, 1, 1, 1, 1] [2018-07-23 15:28:16,262 INFO L414 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash 765309195, now seen corresponding path program 183 times [2018-07-23 15:28:16,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 29768 backedges. 15006 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:17,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:17,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:28:17,629 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:28:17,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:28:17,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:28:17,631 INFO L87 Difference]: Start difference. First operand 493 states and 494 transitions. Second operand 127 states. [2018-07-23 15:28:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:18,397 INFO L93 Difference]: Finished difference Result 499 states and 501 transitions. [2018-07-23 15:28:18,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-23 15:28:18,397 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 492 [2018-07-23 15:28:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:18,398 INFO L225 Difference]: With dead ends: 499 [2018-07-23 15:28:18,398 INFO L226 Difference]: Without dead ends: 497 [2018-07-23 15:28:18,401 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23376, Invalid=38874, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:28:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2018-07-23 15:28:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2018-07-23 15:28:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-07-23 15:28:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2018-07-23 15:28:18,445 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 492 [2018-07-23 15:28:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:18,445 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2018-07-23 15:28:18,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:28:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2018-07-23 15:28:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-07-23 15:28:18,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:18,447 INFO L353 BasicCegarLoop]: trace histogram [124, 123, 123, 122, 1, 1, 1, 1] [2018-07-23 15:28:18,447 INFO L414 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:18,448 INFO L82 PathProgramCache]: Analyzing trace with hash -654797313, now seen corresponding path program 184 times [2018-07-23 15:28:18,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30258 backedges. 15252 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:20,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:20,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-23 15:28:20,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-23 15:28:20,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-23 15:28:20,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15499, Invalid=45757, Unknown=0, NotChecked=0, Total=61256 [2018-07-23 15:28:20,893 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand 248 states. [2018-07-23 15:28:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:22,771 INFO L93 Difference]: Finished difference Result 749 states and 751 transitions. [2018-07-23 15:28:22,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-23 15:28:22,772 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 496 [2018-07-23 15:28:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:22,773 INFO L225 Difference]: With dead ends: 749 [2018-07-23 15:28:22,773 INFO L226 Difference]: Without dead ends: 499 [2018-07-23 15:28:22,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22387 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=38130, Invalid=98400, Unknown=0, NotChecked=0, Total=136530 [2018-07-23 15:28:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-07-23 15:28:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-07-23 15:28:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-07-23 15:28:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 500 transitions. [2018-07-23 15:28:22,823 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 500 transitions. Word has length 496 [2018-07-23 15:28:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:22,823 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 500 transitions. [2018-07-23 15:28:22,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-23 15:28:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 500 transitions. [2018-07-23 15:28:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-07-23 15:28:22,825 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:22,825 INFO L353 BasicCegarLoop]: trace histogram [124, 124, 123, 123, 1, 1, 1, 1] [2018-07-23 15:28:22,825 INFO L414 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:22,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2041837819, now seen corresponding path program 185 times [2018-07-23 15:28:22,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 15252 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:25,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:25,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-23 15:28:25,405 INFO L450 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-23 15:28:25,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-23 15:28:25,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15624, Invalid=46128, Unknown=0, NotChecked=0, Total=61752 [2018-07-23 15:28:25,410 INFO L87 Difference]: Start difference. First operand 499 states and 500 transitions. Second operand 249 states. [2018-07-23 15:28:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:27,654 INFO L93 Difference]: Finished difference Result 751 states and 753 transitions. [2018-07-23 15:28:27,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-23 15:28:27,654 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 498 [2018-07-23 15:28:27,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:27,655 INFO L225 Difference]: With dead ends: 751 [2018-07-23 15:28:27,655 INFO L226 Difference]: Without dead ends: 501 [2018-07-23 15:28:27,662 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22510 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38625, Invalid=99387, Unknown=0, NotChecked=0, Total=138012 [2018-07-23 15:28:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-07-23 15:28:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2018-07-23 15:28:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-07-23 15:28:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2018-07-23 15:28:27,707 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 498 [2018-07-23 15:28:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:27,707 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2018-07-23 15:28:27,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-23 15:28:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2018-07-23 15:28:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-07-23 15:28:27,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:27,709 INFO L353 BasicCegarLoop]: trace histogram [125, 124, 124, 123, 1, 1, 1, 1] [2018-07-23 15:28:27,709 INFO L414 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash -652047113, now seen corresponding path program 186 times [2018-07-23 15:28:27,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30752 backedges. 15500 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:29,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:29,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:28:29,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:28:29,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:28:29,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:28:29,188 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand 129 states. Received shutdown request... [2018-07-23 15:28:29,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-23 15:28:29,735 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:28:29,742 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:28:29,742 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:28:29 BoogieIcfgContainer [2018-07-23 15:28:29,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:28:29,743 INFO L168 Benchmark]: Toolchain (without parser) took 250741.96 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 1.8 GB in the end (delta: -339.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 15:28:29,745 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 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. [2018-07-23 15:28:29,745 INFO L168 Benchmark]: Boogie Preprocessor took 51.43 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. [2018-07-23 15:28:29,746 INFO L168 Benchmark]: RCFGBuilder took 274.70 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. [2018-07-23 15:28:29,746 INFO L168 Benchmark]: TraceAbstraction took 250411.84 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 1.8 GB in the end (delta: -350.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 15:28:29,748 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 0.28 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 51.43 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 274.70 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 250411.84 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 1.8 GB in the end (delta: -350.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (501states) and interpolant automaton (currently 230 states, 129 states before enhancement), while ReachableStatesComputation was computing reachable states (456 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 250.3s OverallTime, 188 OverallIterations, 125 TraceHistogramMax, 111.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12351 SDtfs, 9592 SDslu, 183343 SDs, 0 SdLazy, 195414 SolverSat, 22667 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35147 GetRequests, 4034 SyntacticMatches, 0 SemanticMatches, 31113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266383 ImplicationChecksByTransitivity, 109.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=501occurred in iteration=187, 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: 4.5s AutomataMinimizationTime, 187 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 40.2s SatisfiabilityAnalysisTime, 80.1s InterpolantComputationTime, 47264 NumberOfCodeBlocks, 47264 NumberOfCodeBlocksAsserted, 188 NumberOfCheckSat, 47076 ConstructedInterpolants, 0 QuantifiedInterpolants, 57307865 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 188 InterpolantComputations, 2 PerfectInterpolantSequences, 972600/1929700 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/fragtest_simple.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-28-29-765.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-28-29-765.csv Completed graceful shutdown