java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:44:45,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:44:45,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:44:45,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:44:45,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:44:45,748 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:44:45,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:44:45,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:44:45,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:44:45,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:44:45,754 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:44:45,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:44:45,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:44:45,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:44:45,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:44:45,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:44:45,759 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:44:45,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:44:45,763 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:44:45,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:44:45,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:44:45,767 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:44:45,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:44:45,769 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:44:45,770 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:44:45,771 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:44:45,771 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:44:45,772 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:44:45,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:44:45,774 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:44:45,774 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:44:45,775 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:44:45,775 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:44:45,776 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:44:45,777 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:44:45,778 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:44:45,778 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:44:45,805 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:44:45,806 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:44:45,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:44:45,808 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:44:45,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:44:45,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:44:45,808 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:44:45,809 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:44:45,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:44:45,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:44:45,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:44:45,888 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:44:45,888 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:44:45,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-07-25 08:44:45,890 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-07-25 08:44:45,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:44:45,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:44:45,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:45,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:44:45,954 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:44:45,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:45,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:44:45,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:44:45,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:44:46,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:44:46,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:44:46,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:44:46,021 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:44:46,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:44:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:44:46,274 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:44:46,275 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:46 BoogieIcfgContainer [2018-07-25 08:44:46,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:44:46,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:44:46,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:44:46,281 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:44:46,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/2) ... [2018-07-25 08:44:46,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e064130 and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:44:46, skipping insertion in model container [2018-07-25 08:44:46,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:46" (2/2) ... [2018-07-25 08:44:46,286 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-07-25 08:44:46,297 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:44:46,306 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:44:46,346 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:44:46,347 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:44:46,347 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:44:46,347 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:44:46,348 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:44:46,348 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:44:46,348 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:44:46,348 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:44:46,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:44:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:44:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:44:46,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,376 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:44:46,377 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:44:46,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,449 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:44:46,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:44:46,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:44:46,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:44:46,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:46,468 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:44:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,497 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:44:46,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:44:46,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:44:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,510 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:44:46,510 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:44:46,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:44:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:44:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:44:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:44:46,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:44:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,551 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:44:46,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:44:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:44:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:44:46,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,553 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:44:46,554 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:44:46,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:44:46,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:44:46,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:44:46,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:46,604 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:44:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,628 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:44:46,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:44:46,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:44:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,629 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:44:46,630 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:44:46,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:44:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:44:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:44:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:44:46,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:44:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,634 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:44:46,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:44:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:44:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:44:46,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,635 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:44:46,636 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,636 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:44:46,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:44:46,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:44:46,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:44:46,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:46,695 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:44:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,716 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:44:46,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:44:46,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:44:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,717 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:44:46,717 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:44:46,718 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:44:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:44:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:44:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:44:46,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:44:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,723 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:44:46,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:44:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:44:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:44:46,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,724 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:44:46,724 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:44:46,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:44:46,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:44:46,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:44:46,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:46,782 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:44:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,805 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:44:46,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:44:46,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:44:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,807 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:44:46,807 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:44:46,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:44:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:44:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:44:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:44:46,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:44:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,813 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:44:46,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:44:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:44:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:44:46,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,814 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:44:46,814 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:44:46,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:44:46,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:44:46,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:44:46,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:46,927 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:44:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,973 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:44:46,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:44:46,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:44:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,975 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:44:46,975 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:44:46,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:44:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:44:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:44:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:44:46,981 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:44:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,982 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:44:46,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:44:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:44:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:44:46,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,983 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:44:46,983 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,984 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:44:46,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:44:47,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:44:47,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:44:47,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:44:47,044 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:44:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,087 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:44:47,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:44:47,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:44:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,089 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:44:47,089 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:44:47,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:44:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:44:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:44:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:44:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:44:47,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:44:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,097 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:44:47,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:44:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:44:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:44:47,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,098 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:44:47,099 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:44:47,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:44:47,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:44:47,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:44:47,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:47,195 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:44:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,226 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:44:47,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:44:47,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:44:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,228 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:44:47,228 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:44:47,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:44:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:44:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:44:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:44:47,238 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:44:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,239 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:44:47,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:44:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:44:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:44:47,241 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,241 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:44:47,242 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,242 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:44:47,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:44:47,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:44:47,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:44:47,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:47,316 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:44:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,338 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:44:47,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:44:47,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:44:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,339 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:44:47,340 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:44:47,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:44:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:44:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:44:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:44:47,353 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:44:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,353 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:44:47,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:44:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:44:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:44:47,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,355 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:44:47,355 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,355 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:44:47,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:44:47,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:44:47,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:44:47,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:47,435 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:44:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,456 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:44:47,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:44:47,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:44:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,457 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:44:47,457 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:44:47,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:44:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:44:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:44:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:44:47,465 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:44:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,465 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:44:47,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:44:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:44:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:44:47,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,469 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:44:47,470 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:44:47,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:44:47,562 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:44:47,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:44:47,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:44:47,563 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:44:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,596 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:44:47,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:44:47,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:44:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,597 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:44:47,597 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:44:47,598 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:44:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:44:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:44:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:44:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:44:47,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:44:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,604 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:44:47,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:44:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:44:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:44:47,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,606 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:44:47,606 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:44:47,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:44:47,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:44:47,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:44:47,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:47,692 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:44:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,739 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:44:47,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:44:47,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:44:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,740 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:44:47,740 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:44:47,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:44:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:44:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:44:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:44:47,747 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:44:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,747 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:44:47,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:44:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:44:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:44:47,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,748 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:44:47,749 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,749 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:44:47,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:44:47,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:44:47,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:44:47,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:44:47,825 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:44:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,854 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:44:47,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:44:47,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:44:47,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,858 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:44:47,858 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:44:47,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:44:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:44:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:44:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:44:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:44:47,870 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:44:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,871 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:44:47,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:44:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:44:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:44:47,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,873 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:44:47,873 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:44:47,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:44:47,953 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:44:47,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:44:47,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:47,957 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:44:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,996 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:44:47,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:44:47,997 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:44:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,998 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:44:47,998 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:44:47,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:44:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:44:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:44:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:44:48,007 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:44:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,008 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:44:48,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:44:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:44:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:44:48,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,011 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:44:48,011 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:44:48,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:44:48,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:44:48,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:44:48,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:44:48,109 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:44:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,140 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:44:48,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:44:48,141 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:44:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,145 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:44:48,145 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:44:48,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:44:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:44:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:44:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:44:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:44:48,156 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:44:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,157 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:44:48,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:44:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:44:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:44:48,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,159 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:44:48,159 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:44:48,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:44:48,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:44:48,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:44:48,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:48,243 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:44:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,268 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:44:48,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:44:48,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:44:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,269 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:44:48,270 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:44:48,270 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:44:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:44:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:44:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:44:48,276 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:44:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,277 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:44:48,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:44:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:44:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:44:48,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,278 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:44:48,279 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,279 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:44:48,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:44:48,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:44:48,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:44:48,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:44:48,362 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:44:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,390 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:44:48,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:44:48,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:44:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,393 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:44:48,393 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:44:48,394 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:44:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:44:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:44:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:44:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:44:48,404 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:44:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,405 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:44:48,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:44:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:44:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:44:48,406 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,406 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:44:48,407 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:44:48,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:44:48,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:44:48,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:44:48,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:48,494 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:44:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,513 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:44:48,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:44:48,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:44:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,516 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:44:48,516 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:44:48,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:44:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:44:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:44:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:44:48,524 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:44:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,528 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:44:48,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:44:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:44:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:44:48,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,533 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:44:48,533 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,534 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:44:48,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:44:48,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:44:48,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:44:48,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:44:48,638 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:44:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,667 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:44:48,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:44:48,668 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:44:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,669 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:44:48,673 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:44:48,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:44:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:44:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:44:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:44:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:44:48,681 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:44:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,682 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:44:48,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:44:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:44:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:44:48,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,683 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:44:48,686 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:44:48,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:44:48,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:44:48,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:44:48,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:48,802 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:44:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,855 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:44:48,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:44:48,855 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:44:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,856 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:44:48,856 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:44:48,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:44:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:44:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:44:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:44:48,863 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:44:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,864 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:44:48,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:44:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:44:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:44:48,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,865 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:44:48,865 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:44:48,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:44:48,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:44:48,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:44:48,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:44:48,970 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:44:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,006 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:44:49,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:44:49,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:44:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,008 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:44:49,008 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:44:49,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:44:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:44:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:44:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:44:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:44:49,018 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:44:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,021 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:44:49,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:44:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:44:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:44:49,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,022 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:44:49,022 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:44:49,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:44:49,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:44:49,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:44:49,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:49,146 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:44:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,170 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:44:49,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:44:49,170 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:44:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,171 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:44:49,171 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:44:49,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:44:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:44:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:44:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:44:49,181 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:44:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,182 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:44:49,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:44:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:44:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:44:49,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,184 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:44:49,184 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:44:49,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:44:49,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:44:49,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:44:49,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:44:49,294 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:44:49,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,313 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:44:49,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:44:49,313 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:44:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,314 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:44:49,314 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:44:49,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:44:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:44:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:44:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:44:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:44:49,321 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:44:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,321 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:44:49,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:44:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:44:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:44:49,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,322 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:44:49,323 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:44:49,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:44:49,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:44:49,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:44:49,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:49,463 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:44:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,490 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:44:49,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:44:49,490 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:44:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,491 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:44:49,491 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:44:49,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:44:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:44:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:44:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:44:49,507 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:44:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,507 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:44:49,507 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:44:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:44:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:44:49,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,508 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:44:49,509 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,509 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:44:49,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:44:49,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:44:49,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:44:49,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:44:49,636 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:44:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,660 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:44:49,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:44:49,661 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:44:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,662 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:44:49,662 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:44:49,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:44:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:44:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:44:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:44:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:44:49,667 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:44:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,667 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:44:49,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:44:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:44:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:44:49,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,668 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:44:49,668 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,669 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:44:49,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:44:49,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:44:49,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:44:49,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:49,798 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:44:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,826 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:44:49,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:44:49,826 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:44:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,827 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:44:49,827 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:44:49,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:44:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:44:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:44:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:44:49,832 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:44:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,833 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:44:49,833 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:44:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:44:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:44:49,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,834 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:44:49,834 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:44:49,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:44:49,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:44:49,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:44:49,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:44:49,981 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:44:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,009 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:44:50,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:44:50,010 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:44:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,011 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:44:50,011 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:44:50,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:44:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:44:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:44:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:44:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:44:50,017 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:44:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,017 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:44:50,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:44:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:44:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:44:50,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,018 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:44:50,019 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:44:50,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:44:50,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:44:50,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:44:50,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:50,182 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:44:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,217 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:44:50,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:44:50,217 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:44:50,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,218 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:44:50,218 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:44:50,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:44:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:44:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:44:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:44:50,224 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:44:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,224 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:44:50,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:44:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:44:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:44:50,225 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,225 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:44:50,225 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:44:50,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:44:50,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:44:50,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:44:50,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:44:50,446 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:44:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,476 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:44:50,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:44:50,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:44:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,477 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:44:50,477 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:44:50,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:44:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:44:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:44:50,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:44:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:44:50,482 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:44:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,482 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:44:50,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:44:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:44:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:44:50,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,483 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:44:50,484 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,484 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:44:50,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:44:50,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:44:50,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:44:50,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:50,632 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:44:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,654 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:44:50,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:44:50,654 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:44:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,655 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:44:50,655 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:44:50,656 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:44:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:44:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:44:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:44:50,659 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:44:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,660 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:44:50,660 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:44:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:44:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:44:50,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,661 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:44:50,661 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:44:50,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:44:50,813 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:44:50,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:44:50,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:44:50,815 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:44:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,847 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:44:50,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:44:50,848 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:44:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,849 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:44:50,849 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:44:50,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:44:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:44:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:44:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:44:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:44:50,854 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:44:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,854 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:44:50,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:44:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:44:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:44:50,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,855 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:44:50,855 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:44:50,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:44:51,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:44:51,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:44:51,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:51,019 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:44:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,042 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:44:51,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:44:51,043 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:44:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,043 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:44:51,043 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:44:51,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:44:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:44:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:44:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:44:51,048 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:44:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,048 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:44:51,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:44:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:44:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:44:51,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,049 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:44:51,050 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:44:51,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:44:51,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:44:51,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:44:51,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:44:51,246 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:44:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,301 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:44:51,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:44:51,302 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:44:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,302 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:44:51,303 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:44:51,304 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:44:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:44:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:44:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:44:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:44:51,308 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:44:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,308 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:44:51,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:44:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:44:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:44:51,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,309 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:44:51,310 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:44:51,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:44:51,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:44:51,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:44:51,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:44:51,532 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:44:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,567 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:44:51,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:44:51,567 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:44:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,568 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:44:51,568 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:44:51,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:44:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:44:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:44:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:44:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:44:51,574 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:44:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,574 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:44:51,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:44:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:44:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:44:51,575 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,576 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:44:51,576 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:44:51,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:44:51,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:44:51,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:44:51,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:44:51,762 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:44:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,792 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:44:51,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:44:51,793 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:44:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,794 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:44:51,794 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:44:51,795 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:44:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:44:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:44:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:44:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:44:51,799 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:44:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,800 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:44:51,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:44:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:44:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:44:51,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,801 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:44:51,801 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:44:51,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:44:51,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:44:51,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:44:51,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:44:51,999 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:44:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,028 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:44:52,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:44:52,029 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:44:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,030 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:44:52,030 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:44:52,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:44:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:44:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:44:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:44:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:44:52,034 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:44:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,034 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:44:52,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:44:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:44:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:44:52,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,036 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:44:52,036 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,036 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:44:52,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:44:52,246 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:44:52,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:44:52,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:44:52,248 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:44:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,286 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:44:52,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:44:52,286 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:44:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,287 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:44:52,287 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:44:52,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:44:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:44:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:44:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:44:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:44:52,292 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:44:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,292 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:44:52,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:44:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:44:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:44:52,293 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,294 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:44:52,294 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:44:52,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:44:52,497 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:44:52,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:44:52,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:44:52,500 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:44:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,530 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:44:52,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:44:52,530 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:44:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,531 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:44:52,531 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:44:52,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:44:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:44:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:44:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:44:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:44:52,537 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:44:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,537 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:44:52,537 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:44:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:44:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:44:52,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,540 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:44:52,541 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,541 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:44:52,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:44:52,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:44:52,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:44:52,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:44:52,803 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:44:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,854 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:44:52,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:44:52,855 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:44:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,856 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:44:52,856 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:44:52,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:44:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:44:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:44:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:44:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:44:52,864 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:44:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,864 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:44:52,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:44:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:44:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:44:52,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,865 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:44:52,866 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:44:52,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:44:53,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:44:53,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:44:53,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:44:53,138 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:44:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,228 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:44:53,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:44:53,229 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:44:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,230 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:44:53,230 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:44:53,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:44:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:44:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:44:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:44:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:44:53,235 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:44:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,235 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:44:53,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:44:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:44:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:44:53,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,236 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:44:53,237 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:44:53,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:44:53,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:44:53,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:44:53,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:44:53,463 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:44:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,496 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:44:53,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:44:53,497 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:44:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,498 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:44:53,498 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:44:53,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:44:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:44:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:44:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:44:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:44:53,503 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:44:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,503 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:44:53,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:44:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:44:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:44:53,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,504 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:44:53,504 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:44:53,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:44:53,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:44:53,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:44:53,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:44:53,712 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:44:53,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,746 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:44:53,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:44:53,746 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:44:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,747 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:44:53,747 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:44:53,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:44:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:44:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:44:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:44:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:44:53,753 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:44:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,753 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:44:53,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:44:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:44:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:44:53,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,755 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:44:53,755 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:44:53,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:44:53,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:44:53,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:44:53,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:44:53,962 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:44:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,006 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:44:54,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:44:54,006 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:44:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,007 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:44:54,007 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:44:54,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:44:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:44:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:44:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:44:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:44:54,013 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:44:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,013 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:44:54,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:44:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:44:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:44:54,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,014 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:44:54,014 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,014 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:44:54,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:44:54,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:44:54,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:44:54,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:44:54,224 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:44:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,271 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:44:54,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:44:54,272 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:44:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,273 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:44:54,273 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:44:54,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:44:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:44:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:44:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:44:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:44:54,279 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:44:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,279 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:44:54,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:44:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:44:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:44:54,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,281 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:44:54,281 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:44:54,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:44:54,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:44:54,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:44:54,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:44:54,514 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:44:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,554 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:44:54,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:44:54,555 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:44:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,556 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:44:54,556 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:44:54,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:44:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:44:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:44:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:44:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:44:54,561 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:44:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,562 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:44:54,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:44:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:44:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:44:54,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,563 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:44:54,563 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:44:54,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:44:54,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:44:54,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:44:54,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:44:54,812 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:44:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,869 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:44:54,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:44:54,869 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:44:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,870 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:44:54,871 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:44:54,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:44:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:44:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:44:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:44:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:44:54,876 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:44:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,876 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:44:54,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:44:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:44:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:44:54,878 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,878 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:44:54,878 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:44:54,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:44:55,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:44:55,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:44:55,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:44:55,137 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:44:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,196 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:44:55,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:44:55,197 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:44:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,198 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:44:55,198 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:44:55,199 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:44:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:44:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:44:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:44:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:44:55,204 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:44:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,204 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:44:55,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:44:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:44:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:44:55,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,206 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:44:55,206 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:44:55,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:44:55,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:44:55,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:44:55,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:44:55,483 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:44:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,543 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:44:55,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:44:55,544 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:44:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,545 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:44:55,545 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:44:55,546 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:44:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:44:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:44:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:44:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:44:55,553 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:44:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,553 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:44:55,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:44:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:44:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:44:55,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,555 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:44:55,555 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:44:55,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:44:55,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:44:55,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:44:55,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:44:55,885 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:44:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,949 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:44:55,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:44:55,949 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:44:55,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,950 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:44:55,950 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:44:55,951 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:44:55,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:44:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:44:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:44:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:44:55,958 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:44:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,959 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:44:55,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:44:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:44:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:44:55,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,960 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:44:55,960 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:44:55,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:44:56,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:44:56,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:44:56,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:44:56,303 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:44:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:56,369 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:44:56,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:44:56,370 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:44:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:56,371 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:44:56,371 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:44:56,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:44:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:44:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:44:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:44:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:44:56,377 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:44:56,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:56,378 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:44:56,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:44:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:44:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:44:56,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:56,379 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:44:56,380 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:56,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:44:56,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:44:56,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:44:56,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:44:56,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:44:56,666 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:44:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:56,731 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:44:56,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:44:56,731 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:44:56,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:56,732 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:44:56,732 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:44:56,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:44:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:44:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:44:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:44:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:44:56,738 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:44:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:56,738 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:44:56,738 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:44:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:44:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:44:56,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:56,740 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:44:56,740 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:56,740 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:44:56,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:44:57,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:44:57,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:44:57,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:44:57,052 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:44:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,115 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:44:57,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:44:57,115 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:44:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,116 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:44:57,116 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:44:57,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:44:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:44:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:44:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:44:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:44:57,127 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:44:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,127 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:44:57,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:44:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:44:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:44:57,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,130 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:44:57,130 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:44:57,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:44:57,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:44:57,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:44:57,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:44:57,444 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:44:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,495 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:44:57,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:44:57,495 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:44:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,496 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:44:57,496 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:44:57,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:44:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:44:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:44:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:44:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:44:57,502 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:44:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,503 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:44:57,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:44:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:44:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:44:57,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,504 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:44:57,504 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:44:57,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:44:57,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:44:57,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:44:57,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:44:57,819 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:44:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,892 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:44:57,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:44:57,893 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:44:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,894 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:44:57,894 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:44:57,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:44:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:44:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:44:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:44:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:44:57,900 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:44:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,900 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:44:57,900 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:44:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:44:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:44:57,901 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,902 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:44:57,902 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:44:57,902 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:44:58,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:44:58,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:44:58,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:44:58,218 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:44:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,291 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:44:58,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:44:58,291 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:44:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,292 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:44:58,292 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:44:58,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:44:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:44:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:44:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:44:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:44:58,298 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:44:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,298 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:44:58,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:44:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:44:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:44:58,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,300 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:44:58,300 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:44:58,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:44:58,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:44:58,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:44:58,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:44:58,629 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:44:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,721 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:44:58,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:44:58,721 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:44:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,722 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:44:58,723 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:44:58,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:44:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:44:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:44:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:44:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:44:58,730 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:44:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,730 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:44:58,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:44:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:44:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:44:58,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,732 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:44:58,732 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:44:58,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:44:59,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:44:59,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:44:59,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:44:59,129 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:44:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:59,234 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:44:59,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:44:59,235 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:44:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:59,236 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:44:59,236 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:44:59,238 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:44:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:44:59,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:44:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:44:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:44:59,244 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:44:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:59,244 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:44:59,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:44:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:44:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:44:59,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:59,246 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:44:59,246 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:44:59,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,640 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:44:59,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:44:59,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:44:59,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:44:59,645 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:44:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:59,698 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:44:59,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:44:59,698 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:44:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:59,699 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:44:59,699 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:44:59,700 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:44:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:44:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:44:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:44:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:44:59,705 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:44:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:59,705 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:44:59,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:44:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:44:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:44:59,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:59,707 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:44:59,707 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:44:59,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:45:00,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:45:00,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:45:00,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:45:00,019 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:45:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,092 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:45:00,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:45:00,093 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:45:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,094 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:45:00,094 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:45:00,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:45:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:45:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:45:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:45:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:45:00,100 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:45:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,101 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:45:00,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:45:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:45:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:45:00,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,103 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:45:00,103 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:45:00,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:45:00,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:45:00,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:45:00,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:45:00,422 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:45:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,510 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:45:00,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:45:00,510 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:45:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,511 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:45:00,511 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:45:00,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:45:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:45:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:45:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:45:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:45:00,518 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:45:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,518 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:45:00,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:45:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:45:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:45:00,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,520 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:45:00,520 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:45:00,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:45:00,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:45:00,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:45:00,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:45:00,834 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:45:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,918 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:45:00,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:45:00,918 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:45:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,919 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:45:00,919 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:45:00,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:45:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:45:00,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:45:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:45:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:45:00,925 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:45:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,926 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:45:00,926 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:45:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:45:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:45:00,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,927 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:45:00,928 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,928 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:45:00,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:01,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:01,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:45:01,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:45:01,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:45:01,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:45:01,268 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:45:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,364 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:45:01,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:45:01,364 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:45:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,365 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:45:01,366 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:45:01,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:45:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:45:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:45:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:45:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:45:01,372 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:45:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,373 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:45:01,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:45:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:45:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:45:01,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,374 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:45:01,375 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,375 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:45:01,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:01,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:01,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:45:01,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:45:01,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:45:01,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:45:01,716 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:45:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,808 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:45:01,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:45:01,808 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:45:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,809 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:45:01,810 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:45:01,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:45:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:45:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:45:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:45:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:45:01,816 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:45:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,817 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:45:01,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:45:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:45:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:45:01,818 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,818 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:45:01,818 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:45:01,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:45:02,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:45:02,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:45:02,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:45:02,155 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:45:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:02,273 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:45:02,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:45:02,274 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:45:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:02,275 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:45:02,275 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:45:02,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:45:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:45:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:45:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:45:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:45:02,314 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:45:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:02,315 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:45:02,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:45:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:45:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:45:02,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:02,319 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:45:02,319 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:02,319 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:45:02,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:45:02,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:45:02,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:45:02,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:45:02,659 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:45:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:02,728 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:45:02,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:45:02,729 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:45:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:02,730 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:45:02,730 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:45:02,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:45:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:45:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:45:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:45:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:45:02,739 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:45:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:02,739 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:45:02,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:45:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:45:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:45:02,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:02,743 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:45:02,743 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:02,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:45:02,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:45:03,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:45:03,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:45:03,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:45:03,091 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:45:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:03,197 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:45:03,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:45:03,197 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:45:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:03,198 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:45:03,198 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:45:03,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:45:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:45:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:45:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:45:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:45:03,205 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:45:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:03,206 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:45:03,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:45:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:45:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:45:03,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:03,210 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:45:03,210 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:03,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:45:03,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:45:03,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:45:03,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:45:03,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:45:03,564 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:45:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:03,677 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:45:03,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:45:03,677 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:45:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:03,678 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:45:03,678 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:45:03,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:45:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:45:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:45:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:45:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:45:03,687 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:45:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:03,688 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:45:03,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:45:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:45:03,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:45:03,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:03,689 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:45:03,690 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:03,690 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:45:03,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:04,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:04,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:45:04,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:45:04,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:45:04,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:45:04,056 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:45:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,179 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:45:04,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:45:04,180 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:45:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,181 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:45:04,181 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:45:04,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:45:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:45:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:45:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:45:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:45:04,188 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:45:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,188 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:45:04,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:45:04,188 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:45:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:45:04,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,190 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:45:04,190 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:45:04,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:04,566 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:04,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:45:04,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:45:04,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:45:04,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:45:04,568 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:45:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,680 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:45:04,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:45:04,680 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:45:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,681 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:45:04,681 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:45:04,683 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:45:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:45:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:45:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:45:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:45:04,689 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:45:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,689 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:45:04,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:45:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:45:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:45:04,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,691 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:45:04,691 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:45:04,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:45:05,161 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:45:05,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:45:05,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:45:05,164 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:45:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:05,347 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:45:05,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:45:05,347 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:45:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:05,349 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:45:05,349 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:45:05,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:45:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:45:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:45:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:45:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:45:05,358 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:45:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:05,358 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:45:05,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:45:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:45:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:45:05,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:05,363 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:45:05,363 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:45:05,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:45:05,897 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:45:05,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:45:05,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:45:05,898 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:45:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:06,019 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:45:06,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:45:06,020 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:45:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:06,021 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:45:06,021 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:45:06,022 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:45:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:45:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:45:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:45:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:45:06,028 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:45:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,028 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:45:06,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:45:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:45:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:45:06,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,030 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:45:06,030 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:45:06,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:06,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:06,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:45:06,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:45:06,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:45:06,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:45:06,396 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:45:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:06,555 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:45:06,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:45:06,556 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:45:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:06,557 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:45:06,557 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:45:06,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:45:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:45:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:45:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:45:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:45:06,566 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:45:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,566 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:45:06,566 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:45:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:45:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:45:06,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,568 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:45:06,568 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:45:06,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:06,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:06,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:45:06,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:45:06,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:45:06,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:45:06,947 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:45:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:07,081 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:45:07,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:45:07,082 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:45:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:07,083 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:45:07,083 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:45:07,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:45:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:45:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:45:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:45:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:45:07,091 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:45:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:07,092 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:45:07,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:45:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:45:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:45:07,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:07,094 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:45:07,094 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:45:07,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:07,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:07,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:45:07,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:45:07,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:45:07,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:45:07,484 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:45:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:07,601 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:45:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:45:07,601 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:45:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:07,604 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:45:07,604 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:45:07,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:45:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:45:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:45:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:45:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:45:07,612 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:45:07,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:07,612 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:45:07,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:45:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:45:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:45:07,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:07,614 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:45:07,614 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:45:07,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:45:08,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:45:08,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:45:08,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:45:08,012 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:45:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,121 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:45:08,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:45:08,121 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:45:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,122 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:45:08,122 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:45:08,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:45:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:45:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:45:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:45:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:45:08,129 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:45:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,130 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:45:08,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:45:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:45:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:45:08,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,132 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:45:08,132 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:45:08,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:45:08,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:45:08,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:45:08,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:45:08,532 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:45:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,677 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:45:08,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:45:08,678 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:45:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,679 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:45:08,679 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:45:08,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:45:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:45:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:45:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:45:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:45:08,686 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:45:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,687 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:45:08,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:45:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:45:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:45:08,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,689 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:45:08,689 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:45:08,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:45:09,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:45:09,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:45:09,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:45:09,097 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:45:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:09,186 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:45:09,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:45:09,186 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:45:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:09,188 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:45:09,188 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:45:09,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:45:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:45:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:45:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:45:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:45:09,197 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:45:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:09,198 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:45:09,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:45:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:45:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:45:09,200 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:09,200 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:45:09,200 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:45:09,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:45:09,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:45:09,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:45:09,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:45:09,617 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:45:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:09,791 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:45:09,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:45:09,791 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:45:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:09,792 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:45:09,793 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:45:09,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:45:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:45:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:45:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:45:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:45:09,802 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:45:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:09,802 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:45:09,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:45:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:45:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:45:09,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:09,804 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:45:09,804 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:45:09,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:10,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:10,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:45:10,214 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:45:10,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:45:10,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:45:10,217 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:45:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:10,361 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:45:10,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:45:10,362 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:45:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:10,363 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:45:10,363 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:45:10,364 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:45:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:45:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:45:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:45:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:45:10,372 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:45:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:10,373 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:45:10,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:45:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:45:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:45:10,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:10,375 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:45:10,375 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:10,375 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:45:10,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:10,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:10,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:45:10,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:45:10,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:45:10,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:45:10,803 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:45:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:10,901 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:45:10,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:45:10,902 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:45:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:10,903 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:45:10,903 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:45:10,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:45:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:45:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:45:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:45:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:45:10,911 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:45:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:10,912 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:45:10,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:45:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:45:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:45:10,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:10,914 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:45:10,914 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:45:10,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:11,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:11,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:45:11,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:45:11,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:45:11,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:45:11,400 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:45:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:11,606 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:45:11,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:45:11,606 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:45:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:11,607 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:45:11,607 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:45:11,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:45:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:45:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:45:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:45:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:45:11,614 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:45:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:11,615 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:45:11,615 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:45:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:45:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:45:11,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:11,617 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:45:11,618 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:45:11,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:45:12,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:45:12,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:45:12,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:45:12,282 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:45:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,454 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:45:12,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:45:12,454 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:45:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,455 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:45:12,455 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:45:12,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:45:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:45:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:45:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:45:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:45:12,461 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:45:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,462 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:45:12,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:45:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:45:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:45:12,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,464 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:45:12,464 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:45:12,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:45:12,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:45:12,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:45:12,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:45:12,850 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:45:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,055 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:45:13,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:45:13,056 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:45:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,057 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:45:13,057 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:45:13,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:45:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:45:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:45:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:45:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:45:13,063 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:45:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,064 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:45:13,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:45:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:45:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:45:13,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,066 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:45:13,066 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:45:13,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:45:13,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:45:13,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:45:13,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:45:13,506 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:45:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,709 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:45:13,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:45:13,710 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:45:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,711 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:45:13,711 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:45:13,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:45:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:45:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:45:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:45:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:45:13,717 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:45:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,718 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:45:13,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:45:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:45:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:45:13,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,720 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:45:13,720 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:45:13,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:45:14,148 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:45:14,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:45:14,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:14,149 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:45:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,318 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:45:14,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:45:14,318 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:45:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,320 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:45:14,320 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:45:14,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:45:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:45:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:45:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:45:14,325 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:45:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,326 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:45:14,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:45:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:45:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:45:14,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,328 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:45:14,328 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:45:14,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:45:14,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:45:14,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:45:14,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:45:14,740 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:45:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,956 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:45:14,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:45:14,956 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:45:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,958 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:45:14,958 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:45:14,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:45:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:45:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:45:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:45:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:45:14,965 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:45:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,966 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:45:14,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:45:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:45:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:45:14,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,969 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:45:14,969 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:45:14,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:45:15,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:45:15,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:45:15,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:15,484 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:45:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,740 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:45:15,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:45:15,741 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:45:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,742 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:45:15,742 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:45:15,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:45:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:45:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:45:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:45:15,749 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:45:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,750 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:45:15,750 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:45:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:45:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:45:15,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,753 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:45:15,753 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:45:15,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:45:16,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:45:16,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:45:16,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:45:16,241 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:45:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,339 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:45:16,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:45:16,339 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:45:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,341 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:45:16,341 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:45:16,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:45:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:45:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:45:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:45:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:45:16,348 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:45:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,353 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:45:16,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:45:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:45:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:45:16,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,355 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:45:16,355 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,356 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:45:16,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:45:16,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:45:16,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:45:16,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:16,764 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:45:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,960 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:45:16,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:45:16,961 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:45:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,962 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:45:16,962 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:45:16,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:45:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:45:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:45:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:45:16,969 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:45:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,969 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:45:16,969 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:45:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:45:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:45:16,971 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,971 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:45:16,972 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,972 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:45:16,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:45:17,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:45:17,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:45:17,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:45:17,473 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:45:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,693 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:45:17,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:45:17,693 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:45:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,695 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:45:17,695 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:45:17,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:45:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:45:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:45:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:45:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:45:17,702 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:45:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,703 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:45:17,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:45:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:45:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:45:17,708 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,708 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:45:17,709 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:45:17,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:45:18,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:45:18,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:45:18,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:18,240 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:45:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,409 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:45:18,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:45:18,409 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:45:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,410 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:45:18,410 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:45:18,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:45:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:45:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:45:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:45:18,425 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:45:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,429 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:45:18,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:45:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:45:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:45:18,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,431 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:45:18,431 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:45:18,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:45:18,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:45:18,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:45:18,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:45:18,993 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:45:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:19,192 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:45:19,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:45:19,193 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:45:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:19,194 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:45:19,194 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:45:19,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:45:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:45:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:45:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:45:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:45:19,210 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:45:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:19,211 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:45:19,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:45:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:45:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:45:19,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:19,213 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:45:19,213 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:19,213 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:45:19,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:45:19,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:45:19,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:45:19,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:19,858 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:45:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,114 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:45:20,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:45:20,114 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:45:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,116 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:45:20,116 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:45:20,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:45:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:45:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:45:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:45:20,123 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:45:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,124 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:45:20,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:45:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:45:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:45:20,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,125 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:45:20,125 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,126 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:45:20,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:45:20,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:45:20,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:45:20,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:45:20,588 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 08:45:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,684 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:45:20,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:45:20,684 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:45:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,686 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:45:20,686 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:45:20,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:45:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:45:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:45:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:45:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:45:20,695 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:45:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,695 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:45:20,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:45:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:45:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:45:20,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,697 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:45:20,697 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 08:45:20,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:45:21,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:45:21,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:45:21,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:21,202 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 08:45:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:21,417 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:45:21,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:45:21,417 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:45:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:21,419 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:45:21,419 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:45:21,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:45:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:45:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:45:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:45:21,424 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:45:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:21,425 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:45:21,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:45:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:45:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:45:21,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:21,426 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:45:21,426 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 08:45:21,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:45:21,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:45:21,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:45:21,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:45:21,928 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 08:45:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,120 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:45:22,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:45:22,120 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:45:22,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,121 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:45:22,121 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:45:22,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:45:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:45:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:45:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:45:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:45:22,127 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:45:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,127 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:45:22,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:45:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:45:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:45:22,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,129 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:45:22,129 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 08:45:22,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:45:22,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:45:22,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:45:22,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:22,607 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 08:45:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,798 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:45:22,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:45:22,799 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:45:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,800 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:45:22,800 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:45:22,800 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:45:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:45:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:45:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:45:22,805 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:45:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,805 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:45:22,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:45:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:45:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:45:22,806 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,806 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:45:22,807 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 08:45:22,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:23,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:45:23,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:45:23,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:45:23,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:45:23,222 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 08:45:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,451 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:45:23,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:45:23,451 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:45:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,453 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:45:23,453 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:45:23,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:45:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:45:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:45:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:45:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:45:23,459 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:45:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,459 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:45:23,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:45:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:45:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:45:23,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,461 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:45:23,461 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 08:45:23,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:23,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:45:23,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:45:23,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:45:23,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:23,885 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 08:45:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,075 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:45:24,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:45:24,075 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:45:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,077 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:45:24,077 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:45:24,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:45:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:45:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:45:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:45:24,083 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:45:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,084 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:45:24,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:45:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:45:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:45:24,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,085 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:45:24,086 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,086 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 08:45:24,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:45:24,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:45:24,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:45:24,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:45:24,491 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 08:45:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,676 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:45:24,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:45:24,676 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:45:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,678 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:45:24,678 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:45:24,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:45:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:45:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:45:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:45:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:45:24,689 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:45:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,689 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:45:24,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:45:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:45:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:45:24,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,694 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:45:24,694 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,694 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 08:45:24,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:45:25,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:45:25,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:45:25,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:25,139 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 08:45:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,340 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:45:25,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:45:25,340 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:45:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,341 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:45:25,342 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:45:25,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:45:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:45:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:45:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:45:25,351 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:45:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,351 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:45:25,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:45:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:45:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:45:25,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,353 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:45:25,354 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 08:45:25,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:45:25,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:45:25,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:45:25,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:45:25,900 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 08:45:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,984 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:45:25,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:45:25,984 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:45:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,985 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:45:25,986 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:45:25,986 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:45:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:45:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:45:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:45:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:45:25,991 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:45:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,992 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:45:25,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:45:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:45:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:45:25,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,993 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:45:25,993 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 08:45:25,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:45:26,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:45:26,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:45:26,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:26,372 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 08:45:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:26,532 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:45:26,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:45:26,533 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:45:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:26,533 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:45:26,534 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:45:26,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:45:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:45:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:45:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:45:26,540 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:45:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:26,541 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:45:26,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:45:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:45:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:45:26,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:26,542 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:45:26,542 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 08:45:26,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:45:26,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:45:26,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:45:26,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:45:26,949 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 08:45:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,152 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:45:27,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:45:27,152 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:45:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,153 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:45:27,153 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:45:27,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:45:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:45:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:45:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:45:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:45:27,159 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:45:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,160 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:45:27,160 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:45:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:45:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:45:27,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,161 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:45:27,162 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,162 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 08:45:27,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:27,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:27,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:45:27,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:45:27,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:45:27,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:27,628 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 08:45:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,734 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:45:27,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:45:27,735 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:45:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,736 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:45:27,736 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:45:27,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:45:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:45:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:45:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:45:27,742 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:45:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,742 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:45:27,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:45:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:45:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:45:27,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,743 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:45:27,743 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 08:45:27,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:28,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:28,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:45:28,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:45:28,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:45:28,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:45:28,279 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 08:45:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,528 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:45:28,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:45:28,529 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:45:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,529 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:45:28,529 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:45:28,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:45:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:45:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:45:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:45:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:45:28,534 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:45:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,534 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:45:28,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:45:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:45:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:45:28,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,535 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:45:28,535 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,536 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 08:45:28,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:28,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:28,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:45:28,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:45:28,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:45:28,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:28,962 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 08:45:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,118 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:45:29,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:45:29,118 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:45:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,119 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:45:29,119 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:45:29,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:45:29,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:45:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:45:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:45:29,126 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:45:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,126 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:45:29,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:45:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:45:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:45:29,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,128 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:45:29,128 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 08:45:29,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:29,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:45:29,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:45:29,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:45:29,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:45:29,542 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 08:45:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,727 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:45:29,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:45:29,727 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:45:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,728 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:45:29,728 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:45:29,729 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:45:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:45:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:45:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:45:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:45:29,735 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:45:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,735 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:45:29,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:45:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:45:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:45:29,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,736 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:45:29,736 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 08:45:29,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:45:30,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:45:30,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:45:30,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:30,190 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 08:45:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:30,442 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:45:30,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:45:30,443 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:45:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:30,443 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:45:30,444 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:45:30,445 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:45:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:45:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:45:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:45:30,450 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:45:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:30,451 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:45:30,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:45:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:45:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:45:30,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:30,452 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:45:30,452 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 08:45:30,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:45:31,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:45:31,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:45:31,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:45:31,057 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 08:45:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:31,325 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:45:31,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:45:31,326 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:45:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:31,326 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:45:31,326 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:45:31,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:45:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:45:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:45:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:45:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:45:31,334 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:45:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:31,335 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:45:31,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:45:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:45:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:45:31,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:31,336 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:45:31,337 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 08:45:31,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:45:31,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:45:31,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:45:31,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:45:31,924 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 08:45:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,102 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:45:32,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:45:32,102 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:45:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,102 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:45:32,103 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:45:32,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:45:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:45:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:45:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:45:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:45:32,107 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:45:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,108 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:45:32,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:45:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:45:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:45:32,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,109 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:45:32,109 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 08:45:32,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:32,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:32,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:45:32,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:45:32,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:45:32,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:45:32,591 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 08:45:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,741 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:45:32,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:45:32,741 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:45:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,742 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:45:32,742 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:45:32,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:45:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:45:32,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:45:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:45:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:45:32,748 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:45:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,748 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:45:32,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:45:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:45:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:45:32,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,750 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:45:32,750 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 08:45:32,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:45:33,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:45:33,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:45:33,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:45:33,271 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 08:45:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:33,422 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:45:33,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:45:33,422 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:45:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:33,423 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:45:33,423 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:45:33,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:45:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:45:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:45:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:45:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:45:33,428 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:45:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:33,429 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:45:33,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:45:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:45:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:45:33,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:33,430 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:45:33,430 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 08:45:33,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:45:33,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:45:33,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:45:33,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:45:33,905 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 08:45:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,099 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:45:34,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:45:34,099 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 08:45:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,100 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:45:34,100 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:45:34,101 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:45:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:45:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:45:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:45:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:45:34,105 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:45:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:34,105 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:45:34,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:45:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:45:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:45:34,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:34,106 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:45:34,106 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 08:45:34,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:34,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:34,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:45:34,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:45:34,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:45:34,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:45:34,669 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 08:45:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,942 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:45:34,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:45:34,942 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:45:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,943 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:45:34,943 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:45:34,944 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:45:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:45:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:45:34,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:45:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:45:34,949 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:45:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:34,950 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:45:34,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:45:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:45:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:45:34,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:34,951 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:45:34,951 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 08:45:34,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:35,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:35,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:45:35,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:45:35,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:45:35,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:45:35,432 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 08:45:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:35,739 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:45:35,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:45:35,739 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 08:45:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:35,740 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:45:35,740 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:45:35,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:45:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:45:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:45:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:45:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:45:35,745 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:45:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:35,745 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:45:35,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:45:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:45:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:45:35,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:35,747 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:45:35,747 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:35,747 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 08:45:35,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:36,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:36,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:45:36,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:45:36,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:45:36,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:45:36,243 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 08:45:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:36,463 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:45:36,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:45:36,463 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:45:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:36,464 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:45:36,464 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:45:36,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:45:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:45:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:45:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:45:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:45:36,470 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:45:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:36,470 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:45:36,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:45:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:45:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:45:36,471 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:36,471 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:45:36,472 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:36,472 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 08:45:36,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:37,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:37,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:45:37,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:45:37,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:45:37,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:45:37,076 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 08:45:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:37,396 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:45:37,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:45:37,396 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 08:45:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:37,397 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:45:37,397 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:45:37,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:45:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:45:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:45:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:45:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:45:37,402 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:45:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:37,402 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:45:37,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:45:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:45:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:45:37,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:37,404 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:45:37,404 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:37,404 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 08:45:37,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:45:38,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:45:38,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:45:38,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:45:38,211 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 08:45:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:38,420 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:45:38,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:45:38,421 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:45:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:38,421 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:45:38,421 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:45:38,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:45:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:45:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:45:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:45:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:45:38,426 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:45:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:38,427 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:45:38,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:45:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:45:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:45:38,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:38,428 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:45:38,428 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 08:45:38,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:45:38,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:45:38,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:45:38,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:45:38,942 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 08:45:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,142 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:45:39,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:45:39,143 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 08:45:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,144 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:45:39,144 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:45:39,145 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:45:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:45:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:45:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:45:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:45:39,148 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:45:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,148 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:45:39,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:45:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:45:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:45:39,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,149 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:45:39,149 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 08:45:39,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:39,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:39,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:45:39,692 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:45:39,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:45:39,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:45:39,694 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 08:45:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,994 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:45:39,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:45:39,994 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:45:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,995 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:45:39,995 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:45:39,996 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:45:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:45:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:45:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:45:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:45:40,000 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:45:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:40,000 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:45:40,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:45:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:45:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:45:40,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:40,001 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:45:40,001 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:40,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 08:45:40,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:40,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:40,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:45:40,605 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:45:40,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:45:40,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:45:40,607 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 08:45:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:40,973 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:45:40,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:45:40,974 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 08:45:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:40,974 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:45:40,974 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:45:40,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:45:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:45:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:45:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:45:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:45:40,979 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:45:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:40,980 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:45:40,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:45:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:45:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:45:40,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:40,981 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:45:40,981 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 08:45:40,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:41,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:41,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:45:41,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:45:41,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:45:41,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:45:41,586 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 08:45:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:41,962 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:45:41,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:45:41,962 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:45:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:41,963 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:45:41,963 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:45:41,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:45:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:45:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:45:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:45:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:45:41,970 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:45:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:41,970 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:45:41,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:45:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:45:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:45:41,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:41,972 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:45:41,972 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 08:45:41,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:43,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:43,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:45:43,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:45:43,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:45:43,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:43,009 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 08:45:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:43,286 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:45:43,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:45:43,287 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 08:45:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:43,287 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:45:43,287 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:45:43,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:45:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:45:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:45:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:45:43,293 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:45:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:43,294 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:45:43,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:45:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:45:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:45:43,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,295 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:45:43,295 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 08:45:43,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:43,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:43,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:45:43,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:45:43,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:45:43,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:45:43,892 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 08:45:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,057 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:45:44,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:45:44,057 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:45:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,058 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:45:44,058 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:45:44,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:45:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:45:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:45:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:45:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:45:44,064 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:45:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,065 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:45:44,065 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:45:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:45:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:45:44,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,066 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:45:44,066 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 08:45:44,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:45:44,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:45:44,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:45:44,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:45:44,666 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 08:45:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,041 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:45:45,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:45:45,041 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 08:45:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,042 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:45:45,042 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:45:45,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:45:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:45:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:45:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:45:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:45:45,047 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:45:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,047 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:45:45,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:45:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:45:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:45:45,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,048 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:45:45,049 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,049 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 08:45:45,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:45:45,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:45:45,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:45:45,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:45:45,647 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 08:45:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,872 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:45:45,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:45:45,872 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:45:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,873 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:45:45,873 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:45:45,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:45:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:45:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:45:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:45:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:45:45,881 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:45:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,882 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:45:45,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:45:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:45:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:45:45,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,883 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:45:45,884 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 08:45:45,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:45:46,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:45:46,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:45:46,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:45:46,586 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 08:45:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,976 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:45:46,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:45:46,976 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 08:45:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,977 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:45:46,977 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:45:46,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:45:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:45:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:45:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:45:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:45:46,983 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:45:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,983 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:45:46,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:45:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:45:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:45:46,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,984 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:45:46,984 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 08:45:46,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:45:47,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:45:47,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:45:47,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:45:47,633 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 08:45:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,774 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:45:47,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:45:47,774 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:45:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,775 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:45:47,775 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:45:47,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:45:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:45:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:45:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:45:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:45:47,781 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:45:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,781 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:45:47,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:45:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:45:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:45:47,783 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,783 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:45:47,783 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 08:45:47,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:45:48,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:45:48,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:45:48,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:45:48,426 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 08:45:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,759 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:45:48,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:45:48,759 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 08:45:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,760 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:45:48,760 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:45:48,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:45:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:45:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:45:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:45:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:45:48,766 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:45:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,767 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:45:48,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:45:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:45:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:45:48,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,768 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:45:48,768 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 08:45:48,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:45:49,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:45:49,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:45:49,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:45:49,500 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 08:45:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,931 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:45:49,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:45:49,931 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:45:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,932 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:45:49,932 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:45:49,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:45:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:45:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:45:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:45:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:45:49,937 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:45:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,938 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:45:49,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:45:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:45:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:45:49,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,939 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:45:49,939 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 08:45:49,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:45:50,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:45:50,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:45:50,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:45:50,612 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 08:45:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:50,825 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:45:50,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:45:50,826 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 08:45:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:50,826 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:45:50,826 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:45:50,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:45:50,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:45:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:45:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:45:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:45:50,831 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:45:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:50,831 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:45:50,831 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:45:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:45:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:45:50,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:50,832 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:45:50,832 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:50,832 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 08:45:50,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:51,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:51,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:45:51,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:45:51,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:45:51,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:45:51,536 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 08:45:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,978 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:45:51,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:45:51,979 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:45:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,979 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:45:51,979 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:45:51,981 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:45:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:45:51,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:45:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:45:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:45:51,984 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:45:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,984 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:45:51,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:45:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:45:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:45:51,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,985 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:45:51,985 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 08:45:51,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:45:52,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:45:52,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:45:52,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:45:52,651 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 08:45:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:53,166 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:45:53,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:45:53,167 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 08:45:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:53,167 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:45:53,167 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:45:53,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:45:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:45:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:45:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:45:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:45:53,172 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:45:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:53,172 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:45:53,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:45:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:45:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:45:53,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:53,174 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:45:53,174 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 08:45:53,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:45:53,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:45:53,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:45:53,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:45:53,929 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 08:45:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,231 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:45:54,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:45:54,231 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:45:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,232 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:45:54,232 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:45:54,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:45:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:45:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:45:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:45:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:45:54,238 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:45:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,238 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:45:54,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:45:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:45:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:45:54,239 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,240 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:45:54,240 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 08:45:54,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:54,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:54,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:45:54,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:45:54,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:45:54,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:45:54,979 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 08:45:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,156 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:45:55,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:45:55,157 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 08:45:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,158 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:45:55,158 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:45:55,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:45:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:45:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:45:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:45:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:45:55,162 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:45:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,162 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:45:55,162 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:45:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:45:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:45:55,163 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,163 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:45:55,164 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 08:45:55,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:45:55,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:45:55,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:45:55,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:45:55,915 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 08:45:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:56,377 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:45:56,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:45:56,377 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:45:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:56,378 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:45:56,378 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:45:56,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:45:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:45:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:45:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:45:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:45:56,382 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:45:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:56,382 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:45:56,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:45:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:45:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:45:56,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:56,383 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:45:56,383 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 08:45:56,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:57,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:57,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:45:57,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:45:57,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:45:57,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:45:57,158 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 08:45:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:57,638 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:45:57,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:45:57,638 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 08:45:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:57,639 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:45:57,639 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:45:57,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:45:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:45:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:45:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:45:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:45:57,645 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:45:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:57,645 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:45:57,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:45:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:45:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:45:57,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:57,647 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:45:57,647 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 08:45:57,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:45:58,641 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:45:58,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:45:58,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:45:58,644 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 08:45:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:59,154 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:45:59,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:45:59,154 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:45:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:59,154 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:45:59,155 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:45:59,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:45:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:45:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:45:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:45:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:45:59,160 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:45:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:59,161 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:45:59,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:45:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:45:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:45:59,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:59,162 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:45:59,163 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 08:45:59,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:59,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:59,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:45:59,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:45:59,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:45:59,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:45:59,963 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 08:46:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:00,442 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:46:00,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:46:00,442 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 08:46:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:00,443 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:46:00,443 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:46:00,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:46:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:46:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:46:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:46:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:46:00,447 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:46:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:00,447 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:46:00,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:46:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:46:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:46:00,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:00,448 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:46:00,448 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:00,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 08:46:00,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:01,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:46:01,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:46:01,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:46:01,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:46:01,258 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 08:46:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,786 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:46:01,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:46:01,786 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:46:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,786 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:46:01,786 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:46:01,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:46:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:46:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:46:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:46:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:46:01,790 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:46:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,791 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:46:01,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:46:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:46:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:46:01,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,792 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:46:01,792 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 08:46:01,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:02,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:02,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:46:02,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:46:02,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:46:02,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:46:02,600 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 08:46:03,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:03,113 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:46:03,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:46:03,113 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 08:46:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:03,114 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:46:03,114 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:46:03,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:46:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:46:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:46:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:46:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:46:03,120 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:46:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:03,120 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:46:03,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:46:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:46:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:46:03,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:03,122 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:46:03,122 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:03,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 08:46:03,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:03,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:03,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:46:03,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:46:03,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:46:03,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:46:03,928 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 08:46:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,477 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:46:04,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:46:04,477 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:46:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,478 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:46:04,478 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:46:04,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:46:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:46:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:46:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:46:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:46:04,484 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:46:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,484 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:46:04,484 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:46:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:46:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:46:04,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,486 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:46:04,486 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 08:46:04,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:05,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:05,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:46:05,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:46:05,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:46:05,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:46:05,623 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 08:46:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:06,418 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:46:06,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:46:06,418 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 08:46:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:06,419 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:46:06,419 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:46:06,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:46:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:46:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:46:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:46:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:46:06,425 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:46:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:06,425 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:46:06,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:46:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:46:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:46:06,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:06,427 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:46:06,427 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 08:46:06,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:07,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:07,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:46:07,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:46:07,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:46:07,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:46:07,386 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 08:46:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,761 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:46:07,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:46:07,761 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:46:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,761 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:46:07,762 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:46:07,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:46:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:46:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:46:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:46:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:46:07,766 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:46:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,766 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:46:07,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:46:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:46:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:46:07,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,767 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:46:07,767 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 08:46:07,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:46:08,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:46:08,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:46:08,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:46:08,655 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 08:46:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:08,879 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:46:08,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:46:08,879 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 08:46:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:08,879 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:46:08,879 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:46:08,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:46:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:46:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:46:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:46:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:46:08,884 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:46:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:08,884 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:46:08,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:46:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:46:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:46:08,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:08,886 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:46:08,886 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 08:46:08,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:09,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:09,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:46:09,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:46:09,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:46:09,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:46:09,812 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 08:46:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:10,401 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:46:10,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:46:10,401 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:46:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:10,402 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:46:10,402 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:46:10,404 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:46:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:46:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:46:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:46:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:46:10,407 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:46:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:10,407 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:46:10,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:46:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:46:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:46:10,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:10,408 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:46:10,409 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 08:46:10,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:11,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:11,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:46:11,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:46:11,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:46:11,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:46:11,321 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 08:46:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:12,128 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:46:12,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:46:12,128 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 08:46:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:12,129 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:46:12,129 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:46:12,130 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:46:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:46:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:46:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:46:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:46:12,133 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:46:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:12,134 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:46:12,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:46:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:46:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:46:12,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:12,135 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:46:12,135 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:12,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 08:46:12,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:13,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:13,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:46:13,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:46:13,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:46:13,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:46:13,085 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 08:46:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,800 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:46:13,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:46:13,800 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:46:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,801 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:46:13,801 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:46:13,803 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:46:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:46:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:46:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:46:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:46:13,808 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:46:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:13,808 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:46:13,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:46:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:46:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:46:13,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:13,810 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:46:13,810 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 08:46:13,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:46:15,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:46:15,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:46:15,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:46:15,041 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 08:46:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:15,301 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:46:15,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:46:15,301 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 08:46:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:15,302 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:46:15,302 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:46:15,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:46:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:46:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:46:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:46:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:46:15,306 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:46:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:15,307 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:46:15,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:46:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:46:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:46:15,308 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:15,308 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:46:15,308 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 08:46:15,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:16,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:16,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:46:16,236 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:46:16,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:46:16,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:46:16,240 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 08:46:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:17,087 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:46:17,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:46:17,087 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:46:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:17,088 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:46:17,088 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:46:17,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:46:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:46:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:46:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:46:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:46:17,093 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:46:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,094 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:46:17,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:46:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:46:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:46:17,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,095 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:46:17,095 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 08:46:17,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:18,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:18,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:46:18,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:46:18,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:46:18,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:46:18,099 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 08:46:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:18,810 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:46:18,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:46:18,810 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 08:46:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:18,811 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:46:18,811 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:46:18,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:46:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:46:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:46:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:46:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:46:18,815 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:46:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:18,816 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:46:18,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:46:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:46:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:46:18,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:18,817 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:46:18,817 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 08:46:18,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:19,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:19,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:46:19,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:46:19,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:46:19,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:46:19,745 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 08:46:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:20,273 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:46:20,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:46:20,273 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:46:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:20,274 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:46:20,274 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:46:20,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:46:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:46:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:46:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:46:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:46:20,279 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:46:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:20,279 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:46:20,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:46:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:46:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:46:20,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:20,281 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:46:20,281 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 08:46:20,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:21,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:21,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:46:21,246 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:46:21,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:46:21,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:46:21,248 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 08:46:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,191 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:46:22,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:46:22,191 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 08:46:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,192 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:46:22,193 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:46:22,195 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:46:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:46:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:46:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:46:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:46:22,200 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:46:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,200 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:46:22,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:46:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:46:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:46:22,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,202 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:46:22,202 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,203 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 08:46:22,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:46:23,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:46:23,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:46:23,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:46:23,247 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 08:46:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:23,633 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:46:23,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:46:23,633 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:46:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:23,634 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:46:23,634 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:46:23,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:46:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:46:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:46:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:46:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:46:23,638 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:46:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:23,638 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:46:23,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:46:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:46:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:46:23,639 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:23,639 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:46:23,639 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:23,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 08:46:23,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:46:24,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:46:24,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:46:24,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:46:24,623 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 08:46:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,422 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:46:25,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:46:25,422 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 08:46:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,423 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:46:25,423 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:46:25,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:46:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:46:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:46:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:46:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:46:25,427 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:46:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,428 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:46:25,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:46:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:46:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:46:25,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,429 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:46:25,429 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,429 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 08:46:25,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:46:26,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:46:26,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:46:26,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:46:26,532 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 08:46:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,105 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:46:27,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:46:27,105 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:46:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,106 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:46:27,106 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:46:27,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:46:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:46:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:46:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:46:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:46:27,110 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:46:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,110 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:46:27,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:46:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:46:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:46:27,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,112 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:46:27,112 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 08:46:27,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:28,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:28,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:46:28,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:46:28,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:46:28,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:46:28,212 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 08:46:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,987 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:46:28,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:46:28,987 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 08:46:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,987 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:46:28,987 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:46:28,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:46:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:46:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:46:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:46:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:46:28,992 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:46:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,992 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:46:28,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:46:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:46:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:46:28,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,993 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:46:28,993 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 08:46:28,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:30,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:30,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:46:30,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:46:30,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:46:30,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:30,083 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 08:46:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,012 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:46:31,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:46:31,012 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:46:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,013 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:46:31,013 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:46:31,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:46:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:46:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:46:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:46:31,017 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:46:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,017 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:46:31,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:46:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:46:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:46:31,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,018 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:46:31,018 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 08:46:31,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:32,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:46:32,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:46:32,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:46:32,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:46:32,057 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 08:46:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:32,376 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:46:32,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:46:32,376 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 08:46:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:32,377 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:46:32,377 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:46:32,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:46:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:46:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:46:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:46:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:46:32,383 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:46:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:32,383 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:46:32,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:46:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:46:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:46:32,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:32,385 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:46:32,385 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:32,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 08:46:32,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,797 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:46:33,797 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:46:33,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:46:33,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:33,800 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 08:46:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,745 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:46:34,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:46:34,745 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:46:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,746 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:46:34,746 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:46:34,747 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:46:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:46:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:46:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:46:34,751 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:46:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,751 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:46:34,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:46:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:46:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:46:34,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,752 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:46:34,752 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 08:46:34,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:35,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:46:35,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:46:35,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:46:35,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:35,811 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 08:46:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,881 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:46:36,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:46:36,881 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 08:46:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,882 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:46:36,882 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:46:36,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:46:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:46:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:46:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:46:36,887 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:46:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,887 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:46:36,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:46:36,888 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:46:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:46:36,889 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,889 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:46:36,889 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 08:46:36,890 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:38,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:38,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:46:38,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:46:38,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:46:38,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:38,061 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 08:46:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:38,876 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:46:38,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:46:38,876 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:46:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:38,876 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:46:38,876 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:46:38,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:46:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:46:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:46:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:46:38,881 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:46:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:38,881 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:46:38,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:46:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:46:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:46:38,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:38,883 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:46:38,883 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:38,883 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 08:46:38,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:46:40,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:46:40,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:46:40,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:40,173 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 08:46:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,520 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:46:40,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:46:40,520 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 08:46:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,521 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:46:40,521 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:46:40,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:46:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:46:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:46:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:46:40,526 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:46:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,526 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:46:40,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:46:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:46:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:46:40,527 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,527 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:46:40,527 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 08:46:40,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:46:41,792 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:46:41,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:46:41,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:41,795 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 08:46:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,388 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:46:42,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:46:42,388 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:46:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,389 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:46:42,389 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:46:42,391 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:46:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:46:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:46:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:46:42,394 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:46:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,394 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:46:42,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:46:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:46:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:46:42,395 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,395 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:46:42,396 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,396 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 08:46:42,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:46:43,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:46:43,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:46:43,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:43,752 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 08:46:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,019 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:46:45,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:46:45,020 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 08:46:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,020 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:46:45,020 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:46:45,022 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:46:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:46:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:46:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:46:45,025 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:46:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,026 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:46:45,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:46:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:46:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:46:45,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,027 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:46:45,027 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 08:46:45,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:46:46,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:46:46,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:46:46,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:46:46,408 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 08:46:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:47,602 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:46:47,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:46:47,602 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:46:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:47,603 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:46:47,603 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:46:47,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:46:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:46:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:46:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:46:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:46:47,608 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:46:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:47,608 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:46:47,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:46:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:46:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:46:47,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:47,609 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:46:47,610 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 08:46:47,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:46:49,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:46:49,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:46:49,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:46:49,023 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 08:46:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:50,495 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:46:50,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:46:50,495 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 08:46:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:50,495 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:46:50,496 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:46:50,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:46:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:46:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:46:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:46:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:46:50,502 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:46:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:50,503 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:46:50,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:46:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:46:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:46:50,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:50,504 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:46:50,505 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:50,505 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 08:46:50,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:52,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:52,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:46:52,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:46:52,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:46:52,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:46:52,009 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 08:46:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:53,375 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:46:53,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:46:53,375 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:46:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:53,376 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:46:53,376 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:46:53,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:46:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:46:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:46:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:46:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:46:53,381 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:46:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:53,381 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:46:53,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:46:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:46:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:46:53,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:53,382 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:46:53,382 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:53,383 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 08:46:53,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:54,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:54,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:46:54,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:46:54,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:46:54,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:46:54,798 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 08:46:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:56,373 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:46:56,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:46:56,374 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 08:46:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:56,374 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:46:56,374 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:46:56,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:46:56,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:46:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:46:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:46:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:46:56,381 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:46:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:56,381 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:46:56,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:46:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:46:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:46:56,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:56,382 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:46:56,382 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 08:46:56,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:57,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:57,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:46:57,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:46:57,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:46:57,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:46:57,974 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 08:46:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:59,557 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:46:59,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:46:59,558 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:46:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:59,558 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:46:59,559 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:46:59,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:46:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:46:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:46:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:46:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:46:59,565 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:46:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:59,565 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:46:59,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:46:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:46:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:46:59,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:59,566 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:46:59,566 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 08:46:59,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:47:01,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:47:01,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:47:01,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:47:01,269 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 08:47:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:02,539 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:47:02,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:47:02,540 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 08:47:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:02,540 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:47:02,540 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:47:02,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:47:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:47:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:47:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:47:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:47:02,546 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:47:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,546 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:47:02,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:47:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:47:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:47:02,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,547 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:47:02,548 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 08:47:02,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:04,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:04,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:47:04,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:47:04,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:47:04,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:47:04,043 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-25 08:47:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,920 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:47:04,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:47:04,920 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:47:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,921 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:47:04,921 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:47:04,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:47:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:47:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:47:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:47:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 08:47:04,926 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 08:47:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,927 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 08:47:04,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:47:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 08:47:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:47:04,928 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,928 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 08:47:04,928 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-25 08:47:04,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:47:06,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:47:06,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:47:06,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:47:06,415 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-25 08:47:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:06,856 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:47:06,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:47:06,857 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-25 08:47:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:06,857 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:47:06,857 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:47:06,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:47:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:47:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:47:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:47:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 08:47:06,862 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 08:47:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:06,863 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 08:47:06,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:47:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 08:47:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:47:06,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:06,864 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 08:47:06,864 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-25 08:47:06,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:47:08,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:47:08,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:47:08,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:47:08,373 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-25 08:47:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,091 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:47:09,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:47:09,092 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:47:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,092 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:47:09,092 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:47:09,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:47:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:47:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:47:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:47:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 08:47:09,098 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 08:47:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,098 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 08:47:09,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:47:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 08:47:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:47:09,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,099 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 08:47:09,099 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-25 08:47:09,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:10,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:10,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:47:10,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:47:10,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:47:10,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:47:10,621 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-25 08:47:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:12,211 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:47:12,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:47:12,212 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-25 08:47:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:12,212 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:47:12,212 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:47:12,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:47:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:47:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:47:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:47:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 08:47:12,218 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 08:47:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:12,218 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 08:47:12,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:47:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 08:47:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:47:12,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:12,220 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 08:47:12,220 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:12,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-25 08:47:12,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:13,773 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:13,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:47:13,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:47:13,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:47:13,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:47:13,775 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-25 08:47:15,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,108 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:47:15,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:47:15,108 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:47:15,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,108 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:47:15,109 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:47:15,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:47:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:47:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:47:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:47:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 08:47:15,114 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 08:47:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,114 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 08:47:15,114 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:47:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 08:47:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:47:15,115 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,115 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 08:47:15,115 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-25 08:47:15,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:16,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:16,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:47:16,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:47:16,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:47:16,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:47:16,625 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-25 08:47:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:17,196 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:47:17,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:47:17,196 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-25 08:47:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:17,197 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:47:17,197 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:47:17,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:47:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:47:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:47:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:47:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 08:47:17,202 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 08:47:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:17,202 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 08:47:17,202 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:47:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 08:47:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:47:17,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:17,203 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 08:47:17,203 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:17,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-25 08:47:17,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:18,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:18,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:47:18,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:47:18,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:47:18,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:47:18,786 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-25 08:47:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:20,195 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:47:20,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:47:20,195 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:47:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:20,196 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:47:20,196 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:47:20,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:47:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:47:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:47:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:47:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 08:47:20,202 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 08:47:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:20,202 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 08:47:20,202 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:47:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 08:47:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:47:20,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:20,203 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 08:47:20,204 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-25 08:47:20,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:21,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:21,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:47:21,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:47:21,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:47:21,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:47:21,881 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-25 08:47:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,478 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:47:23,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:47:23,478 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-25 08:47:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,479 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:47:23,479 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:47:23,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:47:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:47:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:47:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:47:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 08:47:23,484 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 08:47:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,484 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 08:47:23,484 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:47:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 08:47:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:47:23,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,485 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 08:47:23,486 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,486 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-25 08:47:23,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:47:24,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:47:24,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:47:24,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:47:24,976 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-25 08:47:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,431 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:47:25,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:47:25,431 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:47:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,431 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:47:25,432 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:47:25,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:47:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:47:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:47:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:47:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 08:47:25,437 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 08:47:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,437 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 08:47:25,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:47:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 08:47:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:47:25,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,438 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 08:47:25,438 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-25 08:47:25,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:47:27,083 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:47:27,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:47:27,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:47:27,084 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-25 08:47:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,705 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:47:28,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:47:28,705 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-25 08:47:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,706 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:47:28,706 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:47:28,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:47:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:47:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:47:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:47:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 08:47:28,710 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 08:47:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,711 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 08:47:28,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:47:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 08:47:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:47:28,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,712 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 08:47:28,712 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-25 08:47:28,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:47:30,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:47:30,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:47:30,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:47:30,290 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-25 08:47:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:30,958 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:47:30,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:47:30,959 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:47:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:30,959 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:47:30,959 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:47:30,961 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:47:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:47:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:47:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:47:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 08:47:30,965 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 08:47:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:30,965 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 08:47:30,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:47:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 08:47:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:47:30,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:30,966 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 08:47:30,966 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-25 08:47:30,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:47:32,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:47:32,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:47:32,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:47:32,685 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-25 08:47:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,619 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:47:34,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:47:34,620 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-25 08:47:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,620 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:47:34,620 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:47:34,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:47:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:47:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:47:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:47:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 08:47:34,625 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 08:47:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,626 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 08:47:34,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:47:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 08:47:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:47:34,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,627 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 08:47:34,627 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-25 08:47:34,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:47:36,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:47:36,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:47:36,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:47:36,243 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-25 08:47:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,819 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:47:36,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:47:36,819 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:47:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,820 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:47:36,820 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:47:36,822 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:47:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:47:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:47:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:47:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 08:47:36,825 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 08:47:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,826 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 08:47:36,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:47:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 08:47:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:47:36,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,827 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 08:47:36,827 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,827 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-25 08:47:36,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:47:38,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:47:38,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:47:38,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:47:38,548 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-25 08:47:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,471 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:47:40,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:47:40,472 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-25 08:47:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,472 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:47:40,472 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:47:40,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:47:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:47:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:47:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:47:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 08:47:40,477 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 08:47:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,478 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 08:47:40,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:47:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 08:47:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:47:40,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,479 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 08:47:40,479 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-25 08:47:40,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:47:42,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:47:42,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:47:42,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:47:42,145 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-25 08:47:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,828 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:47:42,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:47:42,828 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:47:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,828 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:47:42,829 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:47:42,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:47:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:47:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:47:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:47:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 08:47:42,833 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 08:47:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,833 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 08:47:42,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:47:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 08:47:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:47:42,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,835 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 08:47:42,835 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,835 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-25 08:47:42,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:44,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:44,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:47:44,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:47:44,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:47:44,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:47:44,471 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-25 08:47:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,746 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:47:45,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:47:45,746 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-25 08:47:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,747 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:47:45,747 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:47:45,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:47:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:47:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:47:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:47:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 08:47:45,752 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 08:47:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,752 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 08:47:45,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:47:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 08:47:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:47:45,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,754 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 08:47:45,754 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-25 08:47:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:47,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:47:47,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:47:47,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:47:47,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:47:47,400 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-25 08:47:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,438 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:47:49,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:47:49,439 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:47:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,439 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:47:49,439 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:47:49,441 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:47:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:47:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:47:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:47:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 08:47:49,445 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 08:47:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,445 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 08:47:49,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:47:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 08:47:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:47:49,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,446 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 08:47:49,446 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-25 08:47:49,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:51,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:51,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:47:51,123 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:47:51,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:47:51,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:47:51,126 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-25 08:47:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:51,951 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:47:51,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:47:51,951 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-25 08:47:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:51,952 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:47:51,952 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:47:51,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:47:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:47:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:47:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:47:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 08:47:51,957 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 08:47:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:51,957 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 08:47:51,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:47:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 08:47:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:47:51,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:51,958 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 08:47:51,959 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-25 08:47:51,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:53,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:47:53,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:47:53,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:47:53,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:47:53,729 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-25 08:47:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:54,567 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:47:54,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:47:54,567 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:47:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:54,567 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:47:54,567 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:47:54,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:47:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:47:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:47:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:47:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 08:47:54,573 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 08:47:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:54,573 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 08:47:54,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:47:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 08:47:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:47:54,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:54,574 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 08:47:54,574 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:54,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-25 08:47:54,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:56,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:47:56,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:47:56,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:47:56,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:47:56,395 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-25 08:47:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:58,253 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:47:58,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:47:58,253 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-25 08:47:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:58,254 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:47:58,254 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:47:58,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:47:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:47:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:47:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:47:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 08:47:58,259 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 08:47:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:58,259 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 08:47:58,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:47:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 08:47:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:47:58,261 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:58,261 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 08:47:58,261 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:58,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-25 08:47:58,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:00,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:48:00,050 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:48:00,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:48:00,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:48:00,054 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-25 08:48:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,134 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:48:02,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:48:02,134 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:48:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,135 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:48:02,135 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:48:02,137 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:48:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:48:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:48:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:48:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 08:48:02,142 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 08:48:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,143 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 08:48:02,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:48:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 08:48:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:48:02,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:02,145 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 08:48:02,145 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-25 08:48:02,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:03,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:03,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:48:03,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:48:03,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:48:03,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:48:03,939 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-25 08:48:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,981 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:48:05,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:48:05,982 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-25 08:48:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,982 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:48:05,982 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:48:05,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:48:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:48:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:48:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:48:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 08:48:05,987 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 08:48:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,987 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 08:48:05,987 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:48:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 08:48:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:48:05,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,988 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 08:48:05,989 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,989 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-25 08:48:05,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:07,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:48:07,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:48:07,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:48:07,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:48:07,763 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-25 08:48:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:09,175 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:48:09,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:48:09,175 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:48:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:09,176 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:48:09,176 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:48:09,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:48:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:48:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:48:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:48:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 08:48:09,181 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 08:48:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:09,182 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 08:48:09,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:48:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 08:48:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:48:09,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:09,183 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 08:48:09,183 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:09,183 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-25 08:48:09,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:11,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:11,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:48:11,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:48:11,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:48:11,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:48:11,155 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-25 08:48:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:12,226 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:48:12,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:48:12,227 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-25 08:48:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:12,227 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:48:12,227 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:48:12,230 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:48:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:48:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:48:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:48:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 08:48:12,234 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 08:48:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,234 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 08:48:12,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:48:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 08:48:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:48:12,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,235 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 08:48:12,235 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,236 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-25 08:48:12,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:14,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:48:14,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:48:14,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:48:14,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:48:14,201 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-25 08:48:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,001 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:48:15,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:48:15,001 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:48:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,002 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:48:15,002 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:48:15,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:48:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:48:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:48:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:48:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 08:48:15,007 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 08:48:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,007 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 08:48:15,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:48:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 08:48:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:48:15,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,008 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 08:48:15,008 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-25 08:48:15,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:16,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:16,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:48:16,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:48:16,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:48:16,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:48:16,881 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-25 08:48:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:17,827 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:48:17,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:48:17,827 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-25 08:48:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:17,828 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:48:17,828 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:48:17,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:48:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:48:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:48:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:48:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 08:48:17,834 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 08:48:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:17,834 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 08:48:17,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:48:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 08:48:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:48:17,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:17,835 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 08:48:17,835 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-25 08:48:17,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:19,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:19,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:48:19,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:48:19,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:48:19,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:48:19,672 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-25 08:48:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:20,655 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:48:20,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:48:20,655 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:48:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:20,656 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:48:20,656 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:48:20,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:48:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:48:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:48:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:48:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 08:48:20,662 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 08:48:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:20,662 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 08:48:20,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:48:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 08:48:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:48:20,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:20,664 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 08:48:20,664 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-25 08:48:20,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:22,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:48:22,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:48:22,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:48:22,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:48:22,695 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-25 08:48:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:24,135 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:48:24,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:48:24,136 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-25 08:48:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:24,136 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:48:24,136 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:48:24,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:48:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:48:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:48:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:48:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 08:48:24,143 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 08:48:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:24,143 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 08:48:24,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:48:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 08:48:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:48:24,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:24,144 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 08:48:24,144 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:24,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-25 08:48:24,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:26,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:26,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:48:26,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:48:26,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:48:26,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:48:26,198 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-25 08:48:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,030 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:48:28,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:48:28,031 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:48:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,031 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:48:28,031 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:48:28,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:48:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:48:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:48:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:48:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 08:48:28,036 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 08:48:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,036 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 08:48:28,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:48:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 08:48:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:48:28,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,038 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 08:48:28,038 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,038 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-25 08:48:28,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:30,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:30,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:48:30,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:48:30,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:48:30,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:48:30,045 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-25 08:48:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:32,598 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:48:32,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:48:32,598 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-25 08:48:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:32,599 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:48:32,599 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:48:32,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:48:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:48:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:48:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:48:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 08:48:32,605 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 08:48:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:32,606 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 08:48:32,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:48:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 08:48:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:48:32,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:32,608 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 08:48:32,608 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-25 08:48:32,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:34,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:34,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:48:34,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:48:34,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:48:34,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:48:34,812 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-25 08:48:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:38,000 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:48:38,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:48:38,001 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:48:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:38,002 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:48:38,002 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:48:38,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:48:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:48:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:48:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:48:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 08:48:38,008 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 08:48:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:38,009 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 08:48:38,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:48:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 08:48:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:48:38,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:38,010 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 08:48:38,010 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-25 08:48:38,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:48:40,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:48:40,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:48:40,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:48:40,262 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-25 08:48:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:41,431 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:48:41,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:48:41,431 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-25 08:48:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:41,432 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:48:41,432 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:48:41,434 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:48:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:48:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:48:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:48:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 08:48:41,437 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 08:48:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:41,438 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 08:48:41,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:48:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 08:48:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:48:41,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:41,439 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 08:48:41,439 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-25 08:48:41,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:43,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:43,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:48:43,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:48:43,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:48:43,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:48:43,621 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-25 08:48:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:44,719 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:48:44,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:48:44,720 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:48:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:44,720 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:48:44,720 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:48:44,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:48:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:48:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:48:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:48:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 08:48:44,727 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 08:48:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:44,727 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 08:48:44,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:48:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 08:48:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:48:44,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:44,729 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 08:48:44,729 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-25 08:48:44,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:47,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:47,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:48:47,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:48:47,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:48:47,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:48:47,058 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-25 08:48:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:49,788 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:48:49,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:48:49,789 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-25 08:48:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:49,789 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:48:49,789 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:48:49,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:48:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:48:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:48:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:48:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 08:48:49,797 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 08:48:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:49,797 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 08:48:49,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:48:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 08:48:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:48:49,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:49,798 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 08:48:49,799 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-25 08:48:49,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:52,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:52,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:48:52,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:48:52,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:48:52,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:48:52,071 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. Received shutdown request... [2018-07-25 08:48:54,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:48:54,251 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:48:54,256 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:48:54,256 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:48:54 BoogieIcfgContainer [2018-07-25 08:48:54,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:48:54,257 INFO L168 Benchmark]: Toolchain (without parser) took 248305.94 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 595.9 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:54,259 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:48:54,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:48:54,259 INFO L168 Benchmark]: Boogie Preprocessor took 23.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:48:54,259 INFO L168 Benchmark]: RCFGBuilder took 256.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:54,260 INFO L168 Benchmark]: TraceAbstraction took 247978.70 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 585.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:54,262 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 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.08 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 23.46 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 256.56 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 247978.70 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 585.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (415states) and interpolant automaton (currently 188 states, 208 states before enhancement), while ReachableStatesComputation was computing reachable states (372 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 247.9s OverallTime, 206 OverallIterations, 206 TraceHistogramMax, 95.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 822 SDtfs, 0 SDslu, 31805 SDs, 0 SdLazy, 32011 SolverSat, 394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21527 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=205, 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: 1.0s AutomataMinimizationTime, 205 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 53.4s SatisfiabilityAnalysisTime, 88.9s InterpolantComputationTime, 43054 NumberOfCodeBlocks, 43054 NumberOfCodeBlocksAsserted, 206 NumberOfCheckSat, 42848 ConstructedInterpolants, 0 QuantifiedInterpolants, 35393066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 206 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2913870 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/count_by_nondet.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-48-54-271.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-48-54-271.csv Completed graceful shutdown