java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:23:34,127 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:23:34,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:23:34,149 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-07-23 15:23:34,209 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:23:34,233 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:23:34,233 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:23:34,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:23:34,235 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:23:34,235 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:23:34,235 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:23:34,236 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:23:34,236 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:23:34,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:23:34,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:23:34,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:23:34,317 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:23:34,318 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:23:34,319 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-07-23 15:23:34,319 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-07-23 15:23:34,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:23:34,381 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:23:34,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:23:34,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:23:34,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:23:34,410 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,411 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,422 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,423 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,426 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,428 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,429 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:23:34,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:23:34,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:23:34,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:23:34,434 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 23.07 03:23:34" (1/1) ... [2018-07-23 15:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:23:34,655 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:23:34,656 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:23:34 BoogieIcfgContainer [2018-07-23 15:23:34,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:23:34,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:23:34,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:23:34,664 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:23:34,665 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 23.07 03:23:34" (1/2) ... [2018-07-23 15:23:34,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577d8895 and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:23:34, skipping insertion in model container [2018-07-23 15:23:34,667 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 23.07 03:23:34" (2/2) ... [2018-07-23 15:23:34,670 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-07-23 15:23:34,682 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:23:34,694 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:23:34,753 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:23:34,754 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:23:34,754 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:23:34,754 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:23:34,754 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:23:34,755 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:23:34,755 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:23:34,755 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:23:34,755 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:23:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 15:23:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:23:34,785 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:34,786 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:23:34,787 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-23 15:23:34,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:34,890 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:23:34,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:23:34,896 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:23:34,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:23:34,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:23:34,916 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-23 15:23:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:34,949 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-23 15:23:34,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:23:34,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 15:23:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:34,965 INFO L225 Difference]: With dead ends: 10 [2018-07-23 15:23:34,965 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:23:34,969 INFO L573 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 [2018-07-23 15:23:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:23:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:23:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:23:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:23:35,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 15:23:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,008 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:23:35,008 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:23:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:23:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:23:35,009 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,009 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:23:35,010 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-23 15:23:35,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:23:35,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:23:35,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:23:35,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:23:35,040 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-23 15:23:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,062 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:23:35,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:23:35,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:23:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,064 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:23:35,064 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:23:35,065 INFO L573 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 [2018-07-23 15:23:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:23:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:23:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:23:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 15:23:35,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 15:23:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,070 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 15:23:35,070 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:23:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 15:23:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:23:35,070 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,071 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 15:23:35,071 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,071 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-23 15:23:35,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:23:35,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:23:35,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:23:35,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:23:35,149 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-23 15:23:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,170 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:23:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:23:35,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-23 15:23:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,171 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:23:35,171 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:23:35,172 INFO L573 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 [2018-07-23 15:23:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:23:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:23:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:23:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 15:23:35,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-23 15:23:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,177 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 15:23:35,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:23:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 15:23:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:23:35,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,178 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-23 15:23:35,178 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-23 15:23:35,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:23:35,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:23:35,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:23:35,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:23:35,259 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-23 15:23:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,306 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-23 15:23:35,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:23:35,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-23 15:23:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,311 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:23:35,311 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:23:35,312 INFO L573 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 [2018-07-23 15:23:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:23:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:23:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:23:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-23 15:23:35,319 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-23 15:23:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,319 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-23 15:23:35,320 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:23:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-23 15:23:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:23:35,320 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,321 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-23 15:23:35,321 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-23 15:23:35,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:23:35,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:23:35,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:23:35,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:23:35,365 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-23 15:23:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,385 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-23 15:23:35,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:23:35,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-23 15:23:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,387 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:23:35,387 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:23:35,388 INFO L573 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 [2018-07-23 15:23:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:23:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:23:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:23:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-23 15:23:35,402 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-23 15:23:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,402 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-23 15:23:35,402 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:23:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-23 15:23:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:23:35,403 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,403 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-23 15:23:35,404 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-23 15:23:35,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:23:35,498 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:23:35,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:23:35,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:23:35,499 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-23 15:23:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,518 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:23:35,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:23:35,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:23:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,519 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:23:35,519 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:23:35,520 INFO L573 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 [2018-07-23 15:23:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:23:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:23:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:23:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-23 15:23:35,525 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-23 15:23:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,525 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-23 15:23:35,525 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:23:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-23 15:23:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:23:35,526 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,526 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-23 15:23:35,526 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-23 15:23:35,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:23:35,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:23:35,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:23:35,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:23:35,612 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-23 15:23:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,656 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-23 15:23:35,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:23:35,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:23:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,658 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:23:35,658 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:23:35,659 INFO L573 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 [2018-07-23 15:23:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:23:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:23:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:23:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-23 15:23:35,664 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-23 15:23:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,665 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-23 15:23:35,665 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:23:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-23 15:23:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:23:35,666 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,666 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-23 15:23:35,666 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-23 15:23:35,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:23:35,742 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:23:35,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:23:35,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:23:35,743 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-23 15:23:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,778 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-23 15:23:35,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:23:35,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-23 15:23:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,781 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:23:35,782 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:23:35,782 INFO L573 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 [2018-07-23 15:23:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:23:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:23:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:23:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-23 15:23:35,795 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-23 15:23:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,795 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-23 15:23:35,797 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:23:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-23 15:23:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:23:35,798 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,799 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-23 15:23:35,799 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-23 15:23:35,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:35,894 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:35,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:23:35,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:23:35,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:23:35,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:23:35,899 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-23 15:23:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:35,940 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-23 15:23:35,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:23:35,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:23:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:35,942 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:23:35,942 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:23:35,942 INFO L573 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 [2018-07-23 15:23:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:23:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:23:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:23:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-23 15:23:35,955 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-23 15:23:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:35,956 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-23 15:23:35,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:23:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-23 15:23:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:23:35,958 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:35,958 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-23 15:23:35,958 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-23 15:23:35,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:23:36,048 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:23:36,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:23:36,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:23:36,049 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-23 15:23:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,092 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-23 15:23:36,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:23:36,093 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-23 15:23:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,094 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:23:36,094 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:23:36,098 INFO L573 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 [2018-07-23 15:23:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:23:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:23:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:23:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-23 15:23:36,105 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-23 15:23:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,108 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-23 15:23:36,108 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:23:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-23 15:23:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:23:36,109 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,109 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-23 15:23:36,109 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-23 15:23:36,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:23:36,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:23:36,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:23:36,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:23:36,200 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-23 15:23:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,238 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-23 15:23:36,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:23:36,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-23 15:23:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,239 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:23:36,239 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:23:36,240 INFO L573 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 [2018-07-23 15:23:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:23:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:23:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:23:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-23 15:23:36,245 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-23 15:23:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,246 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-23 15:23:36,246 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:23:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-23 15:23:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:23:36,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,247 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-23 15:23:36,247 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-23 15:23:36,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:23:36,302 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:23:36,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:23:36,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:23:36,303 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-23 15:23:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,350 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-23 15:23:36,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:23:36,351 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-23 15:23:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,352 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:23:36,352 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:23:36,353 INFO L573 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 [2018-07-23 15:23:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:23:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:23:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:23:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-23 15:23:36,363 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-23 15:23:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,363 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-23 15:23:36,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:23:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-23 15:23:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:23:36,364 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,365 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-23 15:23:36,365 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-23 15:23:36,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:23:36,453 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:23:36,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:23:36,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:23:36,454 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-23 15:23:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,485 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-23 15:23:36,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:23:36,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-23 15:23:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,486 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:23:36,487 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:23:36,488 INFO L573 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 [2018-07-23 15:23:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:23:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:23:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:23:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-23 15:23:36,497 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-23 15:23:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,499 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-23 15:23:36,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:23:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-23 15:23:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:23:36,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,501 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-23 15:23:36,502 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-23 15:23:36,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:23:36,600 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:23:36,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:23:36,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:23:36,605 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-23 15:23:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,633 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-23 15:23:36,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:23:36,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-23 15:23:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,640 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:23:36,640 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:23:36,641 INFO L573 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 [2018-07-23 15:23:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:23:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:23:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:23:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-23 15:23:36,652 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-23 15:23:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,652 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-23 15:23:36,653 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:23:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-23 15:23:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:23:36,654 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,654 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-23 15:23:36,654 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,654 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-23 15:23:36,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:23:36,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:23:36,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:23:36,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:23:36,754 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-23 15:23:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,780 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-23 15:23:36,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:23:36,781 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-23 15:23:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,782 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:23:36,782 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:23:36,785 INFO L573 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 [2018-07-23 15:23:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:23:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:23:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:23:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-23 15:23:36,793 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-23 15:23:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,793 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-23 15:23:36,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:23:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-23 15:23:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:23:36,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,800 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-23 15:23:36,800 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-23 15:23:36,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:23:36,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:23:36,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:23:36,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:23:36,880 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-23 15:23:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:36,900 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-23 15:23:36,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:23:36,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-23 15:23:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:36,902 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:23:36,902 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:23:36,903 INFO L573 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 [2018-07-23 15:23:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:23:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:23:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:23:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-23 15:23:36,908 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-23 15:23:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:36,909 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-23 15:23:36,909 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:23:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-23 15:23:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:23:36,910 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:36,910 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-23 15:23:36,911 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-23 15:23:36,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:36,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:36,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:23:36,986 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:23:36,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:23:36,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:23:36,987 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-23 15:23:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,008 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-23 15:23:37,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:23:37,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-23 15:23:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,010 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:23:37,010 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:23:37,011 INFO L573 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 [2018-07-23 15:23:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:23:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:23:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:23:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-23 15:23:37,020 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-23 15:23:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,020 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-23 15:23:37,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:23:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-23 15:23:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:23:37,026 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,026 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-23 15:23:37,026 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-23 15:23:37,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:23:37,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:23:37,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:23:37,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:23:37,124 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-23 15:23:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,146 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-23 15:23:37,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:23:37,146 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-23 15:23:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,147 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:23:37,148 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:23:37,155 INFO L573 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 [2018-07-23 15:23:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:23:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:23:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:23:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-23 15:23:37,168 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-23 15:23:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,168 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-23 15:23:37,168 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:23:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-23 15:23:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:23:37,169 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,169 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-23 15:23:37,170 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-23 15:23:37,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:23:37,277 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:23:37,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:23:37,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:23:37,278 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-23 15:23:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,320 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-23 15:23:37,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:23:37,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-23 15:23:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,322 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:23:37,322 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:23:37,322 INFO L573 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 [2018-07-23 15:23:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:23:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:23:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:23:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-23 15:23:37,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-23 15:23:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,328 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-23 15:23:37,328 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:23:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-23 15:23:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:23:37,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,329 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-23 15:23:37,329 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-23 15:23:37,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:23:37,412 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:23:37,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:23:37,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:23:37,413 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-23 15:23:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,435 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-23 15:23:37,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:23:37,436 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-23 15:23:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,436 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:23:37,437 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:23:37,437 INFO L573 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 [2018-07-23 15:23:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:23:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:23:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:23:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-23 15:23:37,443 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-23 15:23:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,443 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-23 15:23:37,443 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:23:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-23 15:23:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:23:37,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,444 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-23 15:23:37,445 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-23 15:23:37,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:23:37,534 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:23:37,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:23:37,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:23:37,535 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-23 15:23:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,568 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-23 15:23:37,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:23:37,569 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-23 15:23:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,569 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:23:37,569 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:23:37,570 INFO L573 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 [2018-07-23 15:23:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:23:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:23:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:23:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-23 15:23:37,578 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-23 15:23:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,578 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-23 15:23:37,579 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:23:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-23 15:23:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:23:37,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,581 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-23 15:23:37,582 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-23 15:23:37,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:23:37,695 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:23:37,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:23:37,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:23:37,696 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-23 15:23:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,712 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-23 15:23:37,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:23:37,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-23 15:23:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,714 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:23:37,714 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:23:37,715 INFO L573 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 [2018-07-23 15:23:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:23:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:23:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:23:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-23 15:23:37,723 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-23 15:23:37,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,724 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-23 15:23:37,724 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:23:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-23 15:23:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:23:37,728 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,728 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-23 15:23:37,729 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-23 15:23:37,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:23:37,843 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:23:37,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:23:37,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:23:37,844 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-23 15:23:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:37,863 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-23 15:23:37,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:23:37,863 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-23 15:23:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:37,864 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:23:37,864 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:23:37,865 INFO L573 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 [2018-07-23 15:23:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:23:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:23:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:23:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-23 15:23:37,872 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-23 15:23:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:37,872 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-23 15:23:37,872 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:23:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-23 15:23:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:23:37,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:37,873 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-23 15:23:37,873 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:37,874 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-23 15:23:37,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:37,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:37,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:23:37,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:23:37,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:23:37,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:23:37,990 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-23 15:23:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:38,011 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-23 15:23:38,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:23:38,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-23 15:23:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:38,012 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:23:38,012 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:23:38,013 INFO L573 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 [2018-07-23 15:23:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:23:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:23:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:23:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-23 15:23:38,018 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-23 15:23:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:38,018 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-23 15:23:38,018 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:23:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-23 15:23:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:23:38,019 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:38,019 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-23 15:23:38,019 INFO L414 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:38,020 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-23 15:23:38,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:38,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:38,149 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:23:38,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:23:38,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:23:38,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:23:38,150 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-23 15:23:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:38,175 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-23 15:23:38,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:23:38,175 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-23 15:23:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:38,176 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:23:38,176 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:23:38,177 INFO L573 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 [2018-07-23 15:23:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:23:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:23:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:23:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-23 15:23:38,186 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-23 15:23:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:38,187 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-23 15:23:38,187 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:23:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-23 15:23:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:23:38,188 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:38,188 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-23 15:23:38,188 INFO L414 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:38,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-23 15:23:38,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:38,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:38,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:23:38,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:23:38,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:23:38,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:23:38,332 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-23 15:23:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:38,358 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-23 15:23:38,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:23:38,358 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-23 15:23:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:38,359 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:23:38,359 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:23:38,360 INFO L573 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 [2018-07-23 15:23:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:23:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:23:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:23:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-23 15:23:38,367 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-23 15:23:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:38,367 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-23 15:23:38,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:23:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-23 15:23:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:23:38,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:38,368 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-23 15:23:38,369 INFO L414 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-23 15:23:38,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:38,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:38,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:23:38,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:23:38,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:23:38,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:23:38,520 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-23 15:23:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:38,553 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-23 15:23:38,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:23:38,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-23 15:23:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:38,555 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:23:38,555 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:23:38,558 INFO L573 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 [2018-07-23 15:23:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:23:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:23:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:23:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-23 15:23:38,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-23 15:23:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:38,565 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-23 15:23:38,565 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:23:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-23 15:23:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:23:38,566 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:38,566 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-23 15:23:38,566 INFO L414 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:38,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-23 15:23:38,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:38,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:38,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:23:38,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:23:38,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:23:38,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:23:38,792 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-23 15:23:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:38,824 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-23 15:23:38,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:23:38,825 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-23 15:23:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:38,825 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:23:38,825 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:23:38,826 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:23:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:23:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:23:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:23:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-23 15:23:38,837 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-23 15:23:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:38,837 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-23 15:23:38,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:23:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-23 15:23:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:23:38,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:38,838 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-23 15:23:38,838 INFO L414 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-23 15:23:38,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:38,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:38,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:23:38,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:23:38,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:23:38,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:23:38,989 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-23 15:23:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,012 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-23 15:23:39,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:23:39,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-23 15:23:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,014 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:23:39,014 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:23:39,015 INFO L573 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 [2018-07-23 15:23:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:23:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:23:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:23:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-23 15:23:39,020 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-23 15:23:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,020 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-23 15:23:39,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:23:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-23 15:23:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:23:39,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,021 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-23 15:23:39,021 INFO L414 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-23 15:23:39,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:39,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:39,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:23:39,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:23:39,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:23:39,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:23:39,190 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-23 15:23:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,218 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-23 15:23:39,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:23:39,219 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-23 15:23:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,220 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:23:39,220 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:23:39,221 INFO L573 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 [2018-07-23 15:23:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:23:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:23:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:23:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-23 15:23:39,224 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-23 15:23:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,225 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-23 15:23:39,225 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:23:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-23 15:23:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:23:39,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,226 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-23 15:23:39,226 INFO L414 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-23 15:23:39,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:39,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:39,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:23:39,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:23:39,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:23:39,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:23:39,376 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-23 15:23:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,398 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-23 15:23:39,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:23:39,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-23 15:23:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,399 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:23:39,399 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:23:39,400 INFO L573 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 [2018-07-23 15:23:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:23:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:23:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:23:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-23 15:23:39,404 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-23 15:23:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,404 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-23 15:23:39,404 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:23:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-23 15:23:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:23:39,405 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,405 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-23 15:23:39,405 INFO L414 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-23 15:23:39,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:39,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:39,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:23:39,555 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:23:39,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:23:39,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:23:39,556 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-23 15:23:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,580 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-23 15:23:39,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:23:39,580 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-23 15:23:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,581 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:23:39,581 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:23:39,582 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:23:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:23:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:23:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:23:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-23 15:23:39,585 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-23 15:23:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,586 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-23 15:23:39,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:23:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-23 15:23:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:23:39,587 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,587 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-23 15:23:39,587 INFO L414 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,587 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-23 15:23:39,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:39,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:39,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:23:39,739 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:23:39,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:23:39,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:23:39,741 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-23 15:23:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,768 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-23 15:23:39,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:23:39,768 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-23 15:23:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,769 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:23:39,769 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:23:39,770 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:23:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:23:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:23:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:23:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-23 15:23:39,774 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-23 15:23:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,774 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-23 15:23:39,774 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:23:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-23 15:23:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:23:39,775 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,775 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-23 15:23:39,775 INFO L414 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-23 15:23:39,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:39,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:39,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:23:39,926 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:23:39,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:23:39,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:23:39,927 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-23 15:23:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:39,950 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-23 15:23:39,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:23:39,951 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-23 15:23:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:39,951 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:23:39,951 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:23:39,952 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:23:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:23:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:23:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:23:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-23 15:23:39,956 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-23 15:23:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:39,956 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-23 15:23:39,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:23:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-23 15:23:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:23:39,957 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:39,957 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-23 15:23:39,957 INFO L414 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-23 15:23:39,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:40,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:40,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:23:40,118 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:23:40,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:23:40,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:23:40,119 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-23 15:23:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:40,144 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-23 15:23:40,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:23:40,144 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-23 15:23:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:40,145 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:23:40,145 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:23:40,146 INFO L573 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 [2018-07-23 15:23:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:23:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:23:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:23:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-23 15:23:40,150 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-23 15:23:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:40,150 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-23 15:23:40,150 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:23:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-23 15:23:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:23:40,151 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:40,151 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-23 15:23:40,151 INFO L414 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:40,152 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-23 15:23:40,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:40,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:40,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:23:40,314 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:23:40,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:23:40,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:23:40,315 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-23 15:23:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:40,346 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-23 15:23:40,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:23:40,347 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-23 15:23:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:40,348 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:23:40,348 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:23:40,349 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:23:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:23:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:23:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:23:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-23 15:23:40,352 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-23 15:23:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:40,352 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-23 15:23:40,353 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:23:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-23 15:23:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:23:40,354 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:40,354 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-23 15:23:40,354 INFO L414 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-23 15:23:40,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:40,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:40,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:23:40,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:23:40,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:23:40,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:23:40,516 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-23 15:23:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:40,540 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-23 15:23:40,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:23:40,541 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-23 15:23:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:40,542 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:23:40,542 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:23:40,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:23:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:23:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:23:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:23:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-23 15:23:40,546 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-23 15:23:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:40,546 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-23 15:23:40,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:23:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-23 15:23:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:23:40,547 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:40,547 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-23 15:23:40,548 INFO L414 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-23 15:23:40,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:40,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:40,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:23:40,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:23:40,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:23:40,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:23:40,739 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-23 15:23:40,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:40,788 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-23 15:23:40,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:23:40,789 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-23 15:23:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:40,790 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:23:40,790 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:23:40,792 INFO L573 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 [2018-07-23 15:23:40,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:23:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:23:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:23:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-23 15:23:40,799 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-23 15:23:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:40,799 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-23 15:23:40,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:23:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-23 15:23:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:23:40,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:40,800 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-23 15:23:40,801 INFO L414 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-23 15:23:40,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:41,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:41,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:23:41,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:23:41,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:23:41,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:23:41,042 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-23 15:23:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:41,085 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-23 15:23:41,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:23:41,086 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-23 15:23:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:41,086 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:23:41,086 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:23:41,088 INFO L573 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 [2018-07-23 15:23:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:23:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:23:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:23:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-23 15:23:41,091 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-23 15:23:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:41,091 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-23 15:23:41,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:23:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-23 15:23:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:23:41,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:41,092 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-23 15:23:41,093 INFO L414 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-23 15:23:41,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:41,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:41,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:23:41,268 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:23:41,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:23:41,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:23:41,269 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-23 15:23:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:41,298 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-23 15:23:41,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:23:41,298 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-23 15:23:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:41,299 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:23:41,299 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:23:41,300 INFO L573 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 [2018-07-23 15:23:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:23:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:23:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:23:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-23 15:23:41,304 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-23 15:23:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:41,304 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-23 15:23:41,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:23:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-23 15:23:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:23:41,305 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:41,305 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-23 15:23:41,305 INFO L414 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-23 15:23:41,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:41,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:41,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:23:41,472 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:23:41,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:23:41,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:23:41,473 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-23 15:23:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:41,503 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-23 15:23:41,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:23:41,503 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-23 15:23:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:41,504 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:23:41,504 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:23:41,505 INFO L573 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 [2018-07-23 15:23:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:23:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:23:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:23:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-23 15:23:41,510 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-23 15:23:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:41,510 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-23 15:23:41,510 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:23:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-23 15:23:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:23:41,511 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:41,511 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-23 15:23:41,511 INFO L414 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-23 15:23:41,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:41,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:41,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:23:41,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:23:41,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:23:41,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:23:41,686 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-23 15:23:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:41,725 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-23 15:23:41,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:23:41,725 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-23 15:23:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:41,726 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:23:41,726 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:23:41,727 INFO L573 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 [2018-07-23 15:23:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:23:41,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:23:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:23:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-23 15:23:41,732 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-23 15:23:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:41,733 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-23 15:23:41,733 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:23:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-23 15:23:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:23:41,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:41,734 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-23 15:23:41,734 INFO L414 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-23 15:23:41,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:41,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:41,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:23:41,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:23:41,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:23:41,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:23:41,912 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-23 15:23:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:41,951 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-23 15:23:41,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:23:41,952 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-23 15:23:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:41,952 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:23:41,953 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:23:41,954 INFO L573 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 [2018-07-23 15:23:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:23:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:23:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:23:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-23 15:23:41,959 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-23 15:23:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:41,959 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-23 15:23:41,959 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:23:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-23 15:23:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:23:41,960 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:41,960 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-23 15:23:41,961 INFO L414 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-23 15:23:41,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:42,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:42,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:23:42,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:23:42,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:23:42,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:23:42,150 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-23 15:23:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:42,182 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-23 15:23:42,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:23:42,182 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-23 15:23:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:42,183 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:23:42,183 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:23:42,184 INFO L573 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 [2018-07-23 15:23:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:23:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:23:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:23:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-23 15:23:42,189 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-23 15:23:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:42,190 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-23 15:23:42,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:23:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-23 15:23:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:23:42,191 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:42,191 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-23 15:23:42,191 INFO L414 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:42,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-23 15:23:42,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:42,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:42,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:23:42,383 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:23:42,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:23:42,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:23:42,384 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-23 15:23:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:42,425 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-23 15:23:42,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:23:42,425 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-23 15:23:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:42,426 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:23:42,426 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:23:42,427 INFO L573 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 [2018-07-23 15:23:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:23:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:23:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:23:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-23 15:23:42,431 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-23 15:23:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:42,432 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-23 15:23:42,432 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:23:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-23 15:23:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:23:42,433 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:42,433 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-23 15:23:42,433 INFO L414 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-23 15:23:42,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:42,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:42,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:23:42,632 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:23:42,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:23:42,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:23:42,634 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-23 15:23:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:42,676 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-23 15:23:42,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:23:42,676 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-23 15:23:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:42,677 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:23:42,677 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:23:42,678 INFO L573 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 [2018-07-23 15:23:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:23:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:23:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:23:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-23 15:23:42,681 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-23 15:23:42,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:42,682 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-23 15:23:42,682 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:23:42,682 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-23 15:23:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:23:42,683 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:42,683 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-23 15:23:42,683 INFO L414 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-23 15:23:42,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:42,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:42,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:23:42,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:23:42,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:23:42,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:23:42,891 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-23 15:23:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:42,937 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-23 15:23:42,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:23:42,937 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-23 15:23:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:42,938 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:23:42,938 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:23:42,939 INFO L573 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 [2018-07-23 15:23:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:23:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:23:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:23:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-23 15:23:42,944 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-23 15:23:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:42,945 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-23 15:23:42,945 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:23:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-23 15:23:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:23:42,946 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:42,946 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-23 15:23:42,946 INFO L414 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-23 15:23:42,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:43,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:43,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:23:43,206 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:23:43,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:23:43,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:23:43,207 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-23 15:23:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:43,258 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-23 15:23:43,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:23:43,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-23 15:23:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:43,259 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:23:43,259 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:23:43,260 INFO L573 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 [2018-07-23 15:23:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:23:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:23:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:23:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-23 15:23:43,266 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-23 15:23:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:43,266 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-23 15:23:43,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:23:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-23 15:23:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:23:43,268 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:43,268 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-23 15:23:43,268 INFO L414 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-23 15:23:43,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:43,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:43,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:23:43,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:23:43,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:23:43,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:23:43,526 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-23 15:23:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:43,580 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-23 15:23:43,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:23:43,580 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-23 15:23:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:43,581 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:23:43,582 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:23:43,583 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:23:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:23:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:23:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:23:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-23 15:23:43,587 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-23 15:23:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:43,588 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-23 15:23:43,588 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:23:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-23 15:23:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:23:43,589 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:43,589 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-23 15:23:43,589 INFO L414 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-23 15:23:43,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:43,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:43,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:23:43,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:23:43,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:23:43,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:23:43,822 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-23 15:23:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:43,870 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-23 15:23:43,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:23:43,870 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-23 15:23:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:43,871 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:23:43,871 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:23:43,872 INFO L573 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 [2018-07-23 15:23:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:23:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:23:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:23:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-23 15:23:43,877 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-23 15:23:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:43,877 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-23 15:23:43,877 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:23:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-23 15:23:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:23:43,878 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:43,878 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-23 15:23:43,879 INFO L414 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-23 15:23:43,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:44,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:44,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:23:44,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:23:44,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:23:44,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:23:44,099 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-23 15:23:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:44,143 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-23 15:23:44,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:23:44,143 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-23 15:23:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:44,144 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:23:44,144 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:23:44,145 INFO L573 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 [2018-07-23 15:23:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:23:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:23:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:23:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-23 15:23:44,150 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-23 15:23:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:44,150 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-23 15:23:44,150 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:23:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-23 15:23:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:23:44,152 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:44,152 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-23 15:23:44,152 INFO L414 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-23 15:23:44,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:44,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:44,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:23:44,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:23:44,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:23:44,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:23:44,373 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-23 15:23:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:44,413 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-23 15:23:44,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:23:44,413 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-23 15:23:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:44,414 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:23:44,415 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:23:44,415 INFO L573 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 [2018-07-23 15:23:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:23:44,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:23:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:23:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-23 15:23:44,419 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-23 15:23:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:44,420 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-23 15:23:44,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:23:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-23 15:23:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:23:44,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:44,421 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-23 15:23:44,421 INFO L414 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-23 15:23:44,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:44,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:44,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:23:44,662 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:23:44,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:23:44,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:23:44,664 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-23 15:23:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:44,725 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-23 15:23:44,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:23:44,726 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-23 15:23:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:44,727 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:23:44,727 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:23:44,728 INFO L573 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 [2018-07-23 15:23:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:23:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:23:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:23:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-23 15:23:44,732 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-23 15:23:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:44,733 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-23 15:23:44,733 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:23:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-23 15:23:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:23:44,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:44,734 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-23 15:23:44,734 INFO L414 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:44,735 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-23 15:23:44,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:44,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:44,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:23:44,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:23:44,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:23:44,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:23:44,978 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-23 15:23:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:45,035 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-23 15:23:45,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:23:45,035 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-23 15:23:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:45,036 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:23:45,036 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:23:45,037 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:23:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:23:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:23:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:23:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-23 15:23:45,041 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-23 15:23:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:45,042 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-23 15:23:45,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:23:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-23 15:23:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:23:45,043 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:45,043 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-23 15:23:45,043 INFO L414 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-23 15:23:45,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:45,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:45,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:23:45,317 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:23:45,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:23:45,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:23:45,321 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-23 15:23:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:45,392 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-23 15:23:45,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:23:45,393 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-23 15:23:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:45,394 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:23:45,394 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:23:45,395 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:23:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:23:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:23:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:23:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-23 15:23:45,401 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-23 15:23:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:45,401 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-23 15:23:45,401 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:23:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-23 15:23:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:23:45,403 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:45,403 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-23 15:23:45,403 INFO L414 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:45,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-23 15:23:45,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:45,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:45,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:23:45,742 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:23:45,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:23:45,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:23:45,743 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-23 15:23:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:45,866 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-23 15:23:45,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:23:45,866 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-23 15:23:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:45,867 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:23:45,867 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:23:45,868 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:23:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:23:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:23:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:23:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-23 15:23:45,873 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-23 15:23:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:45,873 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-23 15:23:45,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:23:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-23 15:23:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:23:45,875 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:45,875 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-23 15:23:45,875 INFO L414 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:45,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-23 15:23:45,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:46,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:46,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:23:46,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:23:46,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:23:46,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:23:46,148 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-23 15:23:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:46,193 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-23 15:23:46,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:23:46,194 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-23 15:23:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:46,195 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:23:46,195 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:23:46,195 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:23:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:23:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:23:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:23:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-23 15:23:46,200 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-23 15:23:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:46,201 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-23 15:23:46,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:23:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-23 15:23:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:23:46,202 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:46,203 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-23 15:23:46,203 INFO L414 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-23 15:23:46,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:46,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:46,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:23:46,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:23:46,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:23:46,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:23:46,488 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-23 15:23:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:46,550 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-23 15:23:46,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:23:46,551 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-23 15:23:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:46,552 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:23:46,552 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:23:46,553 INFO L573 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 [2018-07-23 15:23:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:23:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:23:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:23:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-23 15:23:46,557 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-23 15:23:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:46,558 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-23 15:23:46,558 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:23:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-23 15:23:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:23:46,559 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:46,560 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-23 15:23:46,560 INFO L414 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-23 15:23:46,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:46,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:46,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:23:46,860 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:23:46,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:23:46,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:23:46,862 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-23 15:23:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:46,932 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-23 15:23:46,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:23:46,933 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-23 15:23:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:46,934 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:23:46,934 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:23:46,935 INFO L573 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 [2018-07-23 15:23:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:23:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:23:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:23:46,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-23 15:23:46,939 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-23 15:23:46,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:46,940 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-23 15:23:46,940 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:23:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-23 15:23:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:23:46,941 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:46,942 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-23 15:23:46,942 INFO L414 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-23 15:23:46,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:47,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:47,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:23:47,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:23:47,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:23:47,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:23:47,253 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-23 15:23:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:47,321 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-23 15:23:47,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:23:47,322 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-23 15:23:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:47,323 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:23:47,323 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:23:47,324 INFO L573 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 [2018-07-23 15:23:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:23:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:23:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:23:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-23 15:23:47,329 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-23 15:23:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:47,329 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-23 15:23:47,329 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:23:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-23 15:23:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:23:47,331 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:47,331 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-23 15:23:47,331 INFO L414 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-23 15:23:47,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:47,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:47,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:23:47,661 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:23:47,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:23:47,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:23:47,662 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-23 15:23:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:47,746 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-23 15:23:47,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:23:47,746 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-23 15:23:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:47,747 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:23:47,747 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:23:47,748 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:23:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:23:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:23:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:23:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-23 15:23:47,754 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-23 15:23:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:47,754 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-23 15:23:47,754 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:23:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-23 15:23:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:23:47,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:47,756 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-23 15:23:47,756 INFO L414 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-23 15:23:47,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:48,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:48,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:23:48,101 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:23:48,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:23:48,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:23:48,103 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-23 15:23:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:48,195 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-23 15:23:48,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:23:48,195 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-23 15:23:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:48,196 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:23:48,196 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:23:48,197 INFO L573 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 [2018-07-23 15:23:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:23:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:23:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:23:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-23 15:23:48,203 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-23 15:23:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:48,203 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-23 15:23:48,203 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:23:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-23 15:23:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:23:48,205 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:48,205 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-23 15:23:48,205 INFO L414 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-23 15:23:48,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:48,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:48,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:23:48,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:23:48,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:23:48,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:23:48,597 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-23 15:23:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:48,690 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-23 15:23:48,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:23:48,690 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-23 15:23:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:48,691 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:23:48,691 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:23:48,692 INFO L573 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 [2018-07-23 15:23:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:23:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:23:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:23:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-23 15:23:48,697 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-23 15:23:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:48,698 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-23 15:23:48,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:23:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-23 15:23:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:23:48,699 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:48,700 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-23 15:23:48,700 INFO L414 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:48,700 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-23 15:23:48,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:49,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:49,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:23:49,045 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:23:49,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:23:49,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:23:49,047 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-23 15:23:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:49,102 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-23 15:23:49,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:23:49,103 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-23 15:23:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:49,104 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:23:49,104 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:23:49,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:23:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:23:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:23:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:23:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-23 15:23:49,110 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-23 15:23:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:49,110 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-23 15:23:49,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:23:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-23 15:23:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:23:49,112 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:49,112 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-23 15:23:49,112 INFO L414 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:49,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-23 15:23:49,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:49,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:49,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:23:49,446 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:23:49,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:23:49,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:23:49,448 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-23 15:23:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:49,528 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-23 15:23:49,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:23:49,528 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-23 15:23:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:49,529 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:23:49,529 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:23:49,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:23:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:23:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:23:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:23:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-23 15:23:49,535 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-23 15:23:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:49,536 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-23 15:23:49,536 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:23:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-23 15:23:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:23:49,537 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:49,537 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-23 15:23:49,537 INFO L414 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-23 15:23:49,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:49,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:49,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:23:49,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:23:49,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:23:49,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:23:49,856 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-23 15:23:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:49,941 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-23 15:23:49,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:23:49,942 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-23 15:23:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:49,943 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:23:49,943 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:23:49,943 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:23:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:23:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:23:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:23:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-23 15:23:49,949 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-23 15:23:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:49,949 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-23 15:23:49,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:23:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-23 15:23:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:23:49,951 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:49,951 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-23 15:23:49,951 INFO L414 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:49,951 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-23 15:23:49,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:50,279 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:50,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:23:50,280 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:23:50,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:23:50,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:23:50,281 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-23 15:23:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:50,370 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-23 15:23:50,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:23:50,370 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-23 15:23:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:50,371 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:23:50,371 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:23:50,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:23:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:23:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:23:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:23:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-23 15:23:50,377 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-23 15:23:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:50,378 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-23 15:23:50,378 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:23:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-23 15:23:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:23:50,379 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:50,379 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-23 15:23:50,380 INFO L414 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-23 15:23:50,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:50,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:50,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:23:50,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:23:50,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:23:50,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:23:50,728 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-23 15:23:50,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:50,807 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-23 15:23:50,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:23:50,808 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-23 15:23:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:50,809 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:23:50,809 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:23:50,810 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:23:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:23:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:23:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:23:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-23 15:23:50,816 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-23 15:23:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:50,817 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-23 15:23:50,817 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:23:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-23 15:23:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:23:50,819 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:50,819 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-23 15:23:50,819 INFO L414 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-23 15:23:50,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:51,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:51,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:23:51,267 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:23:51,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:23:51,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:23:51,268 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-23 15:23:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:51,372 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-23 15:23:51,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:23:51,372 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-23 15:23:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:51,373 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:23:51,373 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:23:51,374 INFO L573 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 [2018-07-23 15:23:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:23:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:23:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:23:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-23 15:23:51,378 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-23 15:23:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:51,379 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-23 15:23:51,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:23:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-23 15:23:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:23:51,382 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:51,382 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-23 15:23:51,382 INFO L414 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:51,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-23 15:23:51,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:51,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:51,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:23:51,728 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:23:51,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:23:51,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:23:51,730 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-23 15:23:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:51,834 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-23 15:23:51,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:23:51,835 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-23 15:23:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:51,836 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:23:51,836 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:23:51,837 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:23:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:23:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:23:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:23:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-23 15:23:51,842 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-23 15:23:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:51,843 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-23 15:23:51,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:23:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-23 15:23:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:23:51,845 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:51,845 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-23 15:23:51,845 INFO L414 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-23 15:23:51,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:52,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:52,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:23:52,226 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:23:52,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:23:52,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:23:52,228 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-23 15:23:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:52,371 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-23 15:23:52,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:23:52,372 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-23 15:23:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:52,373 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:23:52,373 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:23:52,376 INFO L573 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 [2018-07-23 15:23:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:23:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:23:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:23:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-23 15:23:52,382 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-23 15:23:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:52,383 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-23 15:23:52,383 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:23:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-23 15:23:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:23:52,387 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:52,387 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-23 15:23:52,388 INFO L414 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-23 15:23:52,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:52,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:52,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:23:52,801 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:23:52,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:23:52,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:23:52,803 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-23 15:23:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:52,932 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-23 15:23:52,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:23:52,932 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-23 15:23:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:52,934 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:23:52,934 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:23:52,935 INFO L573 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 [2018-07-23 15:23:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:23:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:23:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:23:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-23 15:23:52,941 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-23 15:23:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:52,941 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-23 15:23:52,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:23:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-23 15:23:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:23:52,943 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:52,943 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-23 15:23:52,943 INFO L414 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:52,943 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-23 15:23:52,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:53,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:53,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:23:53,315 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:23:53,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:23:53,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:23:53,316 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-23 15:23:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:53,397 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-23 15:23:53,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:23:53,397 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-23 15:23:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:53,399 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:23:53,399 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:23:53,400 INFO L573 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 [2018-07-23 15:23:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:23:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:23:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:23:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-23 15:23:53,406 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-23 15:23:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:53,406 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-23 15:23:53,406 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:23:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-23 15:23:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:23:53,408 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:53,408 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-23 15:23:53,408 INFO L414 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-23 15:23:53,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:53,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:53,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:23:53,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:23:53,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:23:53,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:23:53,773 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-23 15:23:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:53,860 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-23 15:23:53,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:23:53,860 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-23 15:23:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:53,862 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:23:53,862 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:23:53,862 INFO L573 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 [2018-07-23 15:23:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:23:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:23:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:23:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-23 15:23:53,867 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-23 15:23:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:53,868 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-23 15:23:53,868 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:23:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-23 15:23:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:23:53,869 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:53,870 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-23 15:23:53,870 INFO L414 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:53,870 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-23 15:23:53,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:54,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:54,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:23:54,309 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:23:54,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:23:54,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:23:54,311 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-23 15:23:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:54,445 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-23 15:23:54,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:23:54,445 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-23 15:23:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:54,447 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:23:54,447 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:23:54,448 INFO L573 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 [2018-07-23 15:23:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:23:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:23:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:23:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-23 15:23:54,453 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-23 15:23:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:54,454 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-23 15:23:54,454 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:23:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-23 15:23:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:23:54,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:54,456 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-23 15:23:54,456 INFO L414 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-23 15:23:54,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:54,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:54,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:23:54,866 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:23:54,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:23:54,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:23:54,868 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-23 15:23:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:54,949 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-23 15:23:54,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:23:54,950 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-23 15:23:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:54,951 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:23:54,951 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:23:54,952 INFO L573 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 [2018-07-23 15:23:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:23:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:23:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:23:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-23 15:23:54,959 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-23 15:23:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:54,960 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-23 15:23:54,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:23:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-23 15:23:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:23:54,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:54,962 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-23 15:23:54,962 INFO L414 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-23 15:23:54,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:55,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:55,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:23:55,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:23:55,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:23:55,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:23:55,366 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-23 15:23:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:55,493 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-23 15:23:55,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:23:55,493 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-23 15:23:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:55,494 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:23:55,494 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:23:55,495 INFO L573 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 [2018-07-23 15:23:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:23:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:23:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:23:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-23 15:23:55,501 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-23 15:23:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:55,502 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-23 15:23:55,502 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:23:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-23 15:23:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:23:55,503 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:55,503 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-23 15:23:55,504 INFO L414 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:55,504 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-23 15:23:55,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:55,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:55,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:23:55,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:23:55,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:23:55,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:23:55,906 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-23 15:23:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:56,013 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-23 15:23:56,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:23:56,014 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-23 15:23:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:56,015 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:23:56,015 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:23:56,016 INFO L573 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 [2018-07-23 15:23:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:23:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:23:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:23:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-23 15:23:56,021 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-23 15:23:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:56,022 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-23 15:23:56,022 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:23:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-23 15:23:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:23:56,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:56,024 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-23 15:23:56,024 INFO L414 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-23 15:23:56,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:56,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:56,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:23:56,434 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:23:56,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:23:56,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:23:56,436 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-23 15:23:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:56,506 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-23 15:23:56,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:23:56,506 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-23 15:23:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:56,507 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:23:56,507 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:23:56,509 INFO L573 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 [2018-07-23 15:23:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:23:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:23:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:23:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-23 15:23:56,514 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-23 15:23:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:56,514 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-23 15:23:56,514 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:23:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-23 15:23:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:23:56,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:56,516 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-23 15:23:56,516 INFO L414 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-23 15:23:56,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:57,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:57,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:23:57,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:23:57,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:23:57,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:23:57,064 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-23 15:23:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:57,222 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-23 15:23:57,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:23:57,222 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-23 15:23:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:57,224 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:23:57,224 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:23:57,225 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:23:57,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:23:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:23:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:23:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-23 15:23:57,233 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-23 15:23:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:57,233 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-23 15:23:57,234 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:23:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-23 15:23:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:23:57,235 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:57,236 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-23 15:23:57,236 INFO L414 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-23 15:23:57,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:57,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:57,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:23:57,788 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:23:57,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:23:57,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:23:57,790 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-23 15:23:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:57,945 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-23 15:23:57,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:23:57,945 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-23 15:23:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:57,946 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:23:57,947 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:23:57,948 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:23:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:23:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:23:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:23:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-23 15:23:57,953 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-23 15:23:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:57,954 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-23 15:23:57,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:23:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-23 15:23:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:23:57,955 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:57,956 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-23 15:23:57,956 INFO L414 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:57,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-23 15:23:57,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:58,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:58,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:23:58,440 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:23:58,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:23:58,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:23:58,442 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-23 15:23:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:58,624 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-23 15:23:58,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:23:58,624 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-23 15:23:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:58,626 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:23:58,626 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:23:58,627 INFO L573 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 [2018-07-23 15:23:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:23:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:23:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:23:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-23 15:23:58,632 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-23 15:23:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:58,632 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-23 15:23:58,632 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:23:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-23 15:23:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:23:58,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:58,634 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-23 15:23:58,634 INFO L414 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-23 15:23:58,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:59,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:59,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:23:59,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:23:59,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:23:59,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:23:59,128 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-23 15:23:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:59,285 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-23 15:23:59,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:23:59,286 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-23 15:23:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:59,287 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:23:59,287 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:23:59,288 INFO L573 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 [2018-07-23 15:23:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:23:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:23:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:23:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-23 15:23:59,292 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-23 15:23:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:59,293 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-23 15:23:59,293 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:23:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-23 15:23:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:23:59,294 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:59,295 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-23 15:23:59,295 INFO L414 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-23 15:23:59,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:59,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:59,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:23:59,731 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:23:59,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:23:59,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:23:59,733 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-23 15:23:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:59,925 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-23 15:23:59,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:23:59,925 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-23 15:23:59,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:59,926 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:23:59,927 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:23:59,927 INFO L573 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 [2018-07-23 15:23:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:23:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:23:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:23:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-23 15:23:59,932 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-23 15:23:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:59,933 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-23 15:23:59,933 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:23:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-23 15:23:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:23:59,935 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:59,935 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-23 15:23:59,935 INFO L414 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-23 15:23:59,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:00,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:00,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:24:00,393 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:24:00,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:24:00,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:24:00,395 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-23 15:24:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:00,557 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-23 15:24:00,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:24:00,558 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-23 15:24:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:00,559 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:24:00,559 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:24:00,560 INFO L573 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 [2018-07-23 15:24:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:24:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:24:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:24:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-23 15:24:00,566 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-23 15:24:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:00,566 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-23 15:24:00,566 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:24:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-23 15:24:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:24:00,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:00,569 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-23 15:24:00,569 INFO L414 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-23 15:24:00,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:01,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:01,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:24:01,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:24:01,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:24:01,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:24:01,054 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-23 15:24:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:01,215 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-23 15:24:01,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:24:01,215 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-23 15:24:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:01,217 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:24:01,217 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:24:01,218 INFO L573 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 [2018-07-23 15:24:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:24:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:24:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:24:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-23 15:24:01,224 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-23 15:24:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:01,224 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-23 15:24:01,225 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:24:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-23 15:24:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:24:01,227 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:01,227 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-23 15:24:01,227 INFO L414 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-23 15:24:01,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:01,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:01,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:24:01,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:24:01,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:24:01,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:24:01,717 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-23 15:24:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:01,806 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-23 15:24:01,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:24:01,806 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-23 15:24:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:01,808 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:24:01,808 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:24:01,809 INFO L573 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 [2018-07-23 15:24:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:24:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:24:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:24:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-23 15:24:01,814 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-23 15:24:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:01,815 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-23 15:24:01,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:24:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-23 15:24:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:24:01,821 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:01,821 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-23 15:24:01,821 INFO L414 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:01,822 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-23 15:24:01,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:02,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:02,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:24:02,327 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:24:02,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:24:02,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:24:02,329 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-23 15:24:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:02,494 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-23 15:24:02,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:24:02,494 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-23 15:24:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:02,496 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:24:02,496 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:24:02,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:24:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:24:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:24:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:24:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-23 15:24:02,502 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-23 15:24:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:02,503 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-23 15:24:02,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:24:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-23 15:24:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:24:02,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:02,505 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-23 15:24:02,505 INFO L414 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:02,505 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-23 15:24:02,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:02,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:02,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:24:02,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:24:02,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:24:02,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:24:02,995 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-23 15:24:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:03,162 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-23 15:24:03,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:24:03,162 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-23 15:24:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:03,164 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:24:03,164 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:24:03,165 INFO L573 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 [2018-07-23 15:24:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:24:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:24:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:24:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-23 15:24:03,172 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-23 15:24:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:03,172 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-23 15:24:03,172 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:24:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-23 15:24:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:24:03,176 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:03,176 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-23 15:24:03,176 INFO L414 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:03,176 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-23 15:24:03,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:03,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:03,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:24:03,676 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:24:03,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:24:03,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:24:03,678 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-23 15:24:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:03,825 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-23 15:24:03,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:24:03,826 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-23 15:24:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:03,827 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:24:03,827 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:24:03,828 INFO L573 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 [2018-07-23 15:24:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:24:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:24:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:24:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-23 15:24:03,834 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-23 15:24:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:03,835 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-23 15:24:03,835 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:24:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-23 15:24:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:24:03,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:03,837 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-23 15:24:03,838 INFO L414 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-23 15:24:03,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:04,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:04,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:24:04,403 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:24:04,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:24:04,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:24:04,405 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-23 15:24:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:04,571 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-23 15:24:04,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:24:04,571 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-23 15:24:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:04,573 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:24:04,574 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:24:04,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:24:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:24:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:24:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:24:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-23 15:24:04,585 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-23 15:24:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:04,586 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-23 15:24:04,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:24:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-23 15:24:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:24:04,587 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:04,587 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-23 15:24:04,587 INFO L414 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-23 15:24:04,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:05,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:05,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:24:05,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:24:05,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:24:05,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:24:05,125 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-23 15:24:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:05,324 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-23 15:24:05,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:24:05,325 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-23 15:24:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:05,326 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:24:05,326 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:24:05,327 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:24:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:24:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:24:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:24:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-23 15:24:05,334 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-23 15:24:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:05,334 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-23 15:24:05,334 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:24:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-23 15:24:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:24:05,335 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:05,336 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-23 15:24:05,336 INFO L414 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-23 15:24:05,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:05,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:05,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:24:05,775 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:24:05,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:24:05,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:24:05,776 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-23 15:24:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:05,858 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-23 15:24:05,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:24:05,858 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-23 15:24:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:05,860 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:24:05,860 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:24:05,861 INFO L573 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 [2018-07-23 15:24:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:24:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:24:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:24:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-23 15:24:05,865 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-23 15:24:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:05,866 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-23 15:24:05,866 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:24:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-23 15:24:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:24:05,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:05,867 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-23 15:24:05,867 INFO L414 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-23 15:24:05,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:06,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:06,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:24:06,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:24:06,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:24:06,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:24:06,307 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-23 15:24:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:06,480 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-23 15:24:06,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:24:06,480 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-23 15:24:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:06,482 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:24:06,482 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:24:06,483 INFO L573 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 [2018-07-23 15:24:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:24:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:24:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:24:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-23 15:24:06,488 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-23 15:24:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:06,488 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-23 15:24:06,488 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:24:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-23 15:24:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:24:06,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:06,490 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-23 15:24:06,490 INFO L414 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-23 15:24:06,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:06,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:06,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:24:06,955 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:24:06,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:24:06,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:24:06,957 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-23 15:24:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:07,119 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-23 15:24:07,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:24:07,120 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-23 15:24:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:07,121 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:24:07,121 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:24:07,122 INFO L573 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 [2018-07-23 15:24:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:24:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:24:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:24:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-23 15:24:07,127 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-23 15:24:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:07,128 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-23 15:24:07,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:24:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-23 15:24:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:24:07,129 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:07,129 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-23 15:24:07,129 INFO L414 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-23 15:24:07,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:07,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:07,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:24:07,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:24:07,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:24:07,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:24:07,564 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-23 15:24:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:07,808 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-23 15:24:07,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:24:07,808 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-23 15:24:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:07,809 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:24:07,809 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:24:07,810 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:24:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:24:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:24:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:24:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-23 15:24:07,815 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-23 15:24:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:07,816 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-23 15:24:07,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:24:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-23 15:24:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:24:07,817 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:07,817 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-23 15:24:07,817 INFO L414 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:07,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-23 15:24:07,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:08,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:08,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:24:08,243 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:24:08,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:24:08,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:24:08,244 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-23 15:24:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:08,395 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-23 15:24:08,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:24:08,395 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-23 15:24:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:08,397 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:24:08,397 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:24:08,398 INFO L573 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 [2018-07-23 15:24:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:24:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:24:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:24:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-23 15:24:08,402 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-23 15:24:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:08,403 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-23 15:24:08,403 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:24:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-23 15:24:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:24:08,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:08,404 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-23 15:24:08,404 INFO L414 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-23 15:24:08,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:08,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:08,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:24:08,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:24:08,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:24:08,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:24:08,854 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-23 15:24:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:09,019 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-23 15:24:09,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:24:09,020 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-23 15:24:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:09,021 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:24:09,021 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:24:09,022 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:24:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:24:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:24:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:24:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-23 15:24:09,027 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-23 15:24:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:09,027 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-23 15:24:09,027 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:24:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-23 15:24:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:24:09,028 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:09,028 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-23 15:24:09,028 INFO L414 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-23 15:24:09,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:09,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:09,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:24:09,466 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:24:09,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:24:09,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:24:09,468 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-23 15:24:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:09,632 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-23 15:24:09,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:24:09,632 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-23 15:24:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:09,634 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:24:09,634 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:24:09,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:24:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:24:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:24:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:24:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-23 15:24:09,642 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-23 15:24:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:09,642 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-23 15:24:09,642 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:24:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-23 15:24:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:24:09,643 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:09,643 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-23 15:24:09,643 INFO L414 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-23 15:24:09,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:10,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:10,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:24:10,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:24:10,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:24:10,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:24:10,164 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-23 15:24:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:10,375 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-23 15:24:10,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:24:10,375 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-23 15:24:10,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:10,377 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:24:10,377 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:24:10,377 INFO L573 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 [2018-07-23 15:24:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:24:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:24:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:24:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-23 15:24:10,383 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-23 15:24:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:10,383 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-23 15:24:10,383 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:24:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-23 15:24:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:24:10,384 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:10,384 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-23 15:24:10,385 INFO L414 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-23 15:24:10,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:10,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:10,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:24:10,761 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:24:10,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:24:10,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:24:10,763 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-23 15:24:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:10,845 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-23 15:24:10,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:24:10,845 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-23 15:24:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:10,846 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:24:10,846 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:24:10,847 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:24:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:24:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:24:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:24:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-23 15:24:10,852 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-23 15:24:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:10,852 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-23 15:24:10,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:24:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-23 15:24:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:24:10,854 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:10,854 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-23 15:24:10,854 INFO L414 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-23 15:24:10,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:11,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:11,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:24:11,231 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:24:11,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:24:11,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:24:11,233 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-23 15:24:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:11,378 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-23 15:24:11,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:24:11,378 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-23 15:24:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:11,379 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:24:11,379 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:24:11,380 INFO L573 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 [2018-07-23 15:24:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:24:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:24:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:24:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-23 15:24:11,384 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-23 15:24:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:11,384 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-23 15:24:11,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:24:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-23 15:24:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:24:11,385 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:11,385 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-23 15:24:11,385 INFO L414 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-23 15:24:11,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:11,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:11,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:24:11,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:24:11,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:24:11,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:24:11,773 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-23 15:24:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:11,951 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-23 15:24:11,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:24:11,951 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-23 15:24:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:11,952 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:24:11,952 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:24:11,954 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:24:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:24:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:24:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:24:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-23 15:24:11,959 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-23 15:24:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:11,959 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-23 15:24:11,959 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:24:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-23 15:24:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:24:11,960 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:11,960 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-23 15:24:11,960 INFO L414 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:11,961 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-23 15:24:11,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:12,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:12,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:24:12,386 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:24:12,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:24:12,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:24:12,388 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-23 15:24:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:12,467 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-23 15:24:12,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:24:12,467 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-23 15:24:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:12,468 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:24:12,468 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:24:12,469 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:24:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:24:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:24:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:24:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-23 15:24:12,473 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-23 15:24:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:12,474 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-23 15:24:12,474 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:24:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-23 15:24:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:24:12,475 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:12,475 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-23 15:24:12,475 INFO L414 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:12,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-23 15:24:12,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:12,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:12,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:24:12,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:24:12,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:24:12,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:24:12,979 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-23 15:24:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:13,162 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-23 15:24:13,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:24:13,163 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-23 15:24:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:13,163 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:24:13,163 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:24:13,165 INFO L573 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 [2018-07-23 15:24:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:24:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:24:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:24:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-23 15:24:13,169 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-23 15:24:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:13,169 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-23 15:24:13,169 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:24:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-23 15:24:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:24:13,170 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:13,170 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-23 15:24:13,170 INFO L414 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:13,170 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-23 15:24:13,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:13,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:13,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:24:13,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:24:13,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:24:13,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:24:13,610 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-23 15:24:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:13,742 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-23 15:24:13,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:24:13,742 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-23 15:24:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:13,743 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:24:13,743 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:24:13,744 INFO L573 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 [2018-07-23 15:24:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:24:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:24:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:24:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-23 15:24:13,748 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-23 15:24:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:13,748 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-23 15:24:13,748 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:24:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-23 15:24:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:24:13,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:13,749 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-23 15:24:13,749 INFO L414 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:13,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-23 15:24:13,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:14,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:14,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:24:14,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:24:14,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:24:14,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:24:14,218 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-23 15:24:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:14,387 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-23 15:24:14,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:24:14,387 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-23 15:24:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:14,388 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:24:14,388 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:24:14,389 INFO L573 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 [2018-07-23 15:24:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:24:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:24:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:24:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-23 15:24:14,394 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-23 15:24:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:14,394 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-23 15:24:14,394 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:24:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-23 15:24:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:24:14,395 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:14,395 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-23 15:24:14,395 INFO L414 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-23 15:24:14,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:14,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:14,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:24:14,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:24:14,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:24:14,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:24:14,814 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-23 15:24:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:15,014 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-23 15:24:15,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:24:15,015 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-23 15:24:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:15,015 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:24:15,016 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:24:15,017 INFO L573 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 [2018-07-23 15:24:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:24:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:24:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:24:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-23 15:24:15,021 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-23 15:24:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:15,021 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-23 15:24:15,022 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:24:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-23 15:24:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:24:15,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:15,023 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-23 15:24:15,023 INFO L414 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:15,023 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-23 15:24:15,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:15,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:15,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:24:15,631 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:24:15,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:24:15,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:24:15,632 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-23 15:24:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:15,812 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-23 15:24:15,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:24:15,812 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-23 15:24:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:15,813 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:24:15,813 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:24:15,813 INFO L573 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 [2018-07-23 15:24:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:24:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:24:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:24:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-23 15:24:15,818 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-23 15:24:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:15,818 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-23 15:24:15,818 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:24:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-23 15:24:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:24:15,819 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:15,820 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-23 15:24:15,820 INFO L414 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-23 15:24:15,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:16,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:16,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:24:16,261 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:24:16,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:24:16,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:24:16,263 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-23 15:24:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:16,416 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-23 15:24:16,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:24:16,417 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-23 15:24:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:16,417 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:24:16,417 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:24:16,418 INFO L573 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 [2018-07-23 15:24:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:24:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:24:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:24:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-23 15:24:16,423 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-23 15:24:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:16,423 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-23 15:24:16,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:24:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-23 15:24:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:24:16,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:16,425 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-23 15:24:16,425 INFO L414 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-23 15:24:16,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:16,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:16,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:24:16,899 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:24:16,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:24:16,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:24:16,901 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-23 15:24:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:17,032 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-23 15:24:17,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:24:17,033 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-23 15:24:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:17,033 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:24:17,034 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:24:17,035 INFO L573 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 [2018-07-23 15:24:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:24:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:24:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:24:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-23 15:24:17,040 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-23 15:24:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:17,041 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-23 15:24:17,041 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:24:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-23 15:24:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:24:17,042 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:17,042 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-23 15:24:17,042 INFO L414 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:17,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-23 15:24:17,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:17,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:17,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:24:17,554 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:24:17,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:24:17,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:24:17,555 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-23 15:24:17,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:17,685 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-23 15:24:17,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:24:17,685 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-23 15:24:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:17,686 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:24:17,686 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:24:17,687 INFO L573 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 [2018-07-23 15:24:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:24:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:24:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:24:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-23 15:24:17,691 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-23 15:24:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:17,691 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-23 15:24:17,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:24:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-23 15:24:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:24:17,693 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:17,693 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-23 15:24:17,693 INFO L414 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-23 15:24:17,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:18,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:18,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:24:18,151 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:24:18,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:24:18,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:24:18,153 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-23 15:24:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:18,316 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-23 15:24:18,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:24:18,316 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-23 15:24:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:18,317 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:24:18,317 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:24:18,318 INFO L573 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 [2018-07-23 15:24:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:24:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:24:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:24:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-23 15:24:18,323 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-23 15:24:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:18,323 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-23 15:24:18,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:24:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-23 15:24:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:24:18,324 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:18,324 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-23 15:24:18,324 INFO L414 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:18,325 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-23 15:24:18,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:18,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:18,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:24:18,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:24:18,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:24:18,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:24:18,826 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-23 15:24:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,101 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-23 15:24:19,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:24:19,101 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-23 15:24:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,102 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:24:19,102 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:24:19,103 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:24:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:24:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:24:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:24:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-23 15:24:19,108 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-23 15:24:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,108 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-23 15:24:19,108 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:24:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-23 15:24:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:24:19,109 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,110 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-23 15:24:19,110 INFO L414 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-23 15:24:19,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:19,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:19,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:24:19,596 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:24:19,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:24:19,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:24:19,597 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-23 15:24:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:19,840 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-23 15:24:19,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:24:19,841 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-23 15:24:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:19,841 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:24:19,841 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:24:19,842 INFO L573 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 [2018-07-23 15:24:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:24:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:24:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:24:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-23 15:24:19,846 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-23 15:24:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:19,847 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-23 15:24:19,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:24:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-23 15:24:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:24:19,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:19,848 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-23 15:24:19,848 INFO L414 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-23 15:24:19,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:20,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:20,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:24:20,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:24:20,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:24:20,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:24:20,335 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-23 15:24:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:20,519 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-23 15:24:20,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:24:20,519 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-23 15:24:20,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:20,520 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:24:20,520 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:24:20,521 INFO L573 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 [2018-07-23 15:24:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:24:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:24:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:24:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-23 15:24:20,525 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-23 15:24:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:20,526 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-23 15:24:20,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:24:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-23 15:24:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:24:20,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:20,527 INFO L353 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-23 15:24:20,527 INFO L414 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-23 15:24:20,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:24:21,075 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:24:21,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:24:21,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:24:21,077 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-23 15:24:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:21,297 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-23 15:24:21,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:24:21,297 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-23 15:24:21,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:21,298 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:24:21,298 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:24:21,298 INFO L573 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 [2018-07-23 15:24:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:24:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-23 15:24:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-23 15:24:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-23 15:24:21,301 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-23 15:24:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:21,302 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-23 15:24:21,302 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:24:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-23 15:24:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-23 15:24:21,302 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:21,302 INFO L353 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-23 15:24:21,303 INFO L414 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-23 15:24:21,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:21,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:21,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:24:21,996 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:24:21,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:24:21,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:24:21,998 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-23 15:24:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,166 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-23 15:24:22,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-23 15:24:22,166 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-23 15:24:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,166 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:24:22,167 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:24:22,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:24:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:24:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:24:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:24:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-23 15:24:22,172 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-23 15:24:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,172 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-23 15:24:22,172 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:24:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-23 15:24:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:24:22,173 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,173 INFO L353 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-23 15:24:22,174 INFO L414 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,174 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-23 15:24:22,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:22,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:22,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:24:22,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:24:22,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:24:22,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:24:22,722 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-23 15:24:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:22,894 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-23 15:24:22,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:24:22,894 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-23 15:24:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:22,895 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:24:22,895 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:24:22,896 INFO L573 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 [2018-07-23 15:24:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:24:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:24:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:24:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-23 15:24:22,899 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-23 15:24:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:22,899 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-23 15:24:22,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:24:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-23 15:24:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:24:22,900 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:22,900 INFO L353 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-23 15:24:22,900 INFO L414 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-23 15:24:22,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:23,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:23,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-23 15:24:23,421 INFO L450 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-23 15:24:23,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-23 15:24:23,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:24:23,423 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-23 15:24:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:23,663 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-23 15:24:23,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-23 15:24:23,663 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-23 15:24:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:23,664 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:24:23,664 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:24:23,665 INFO L573 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 [2018-07-23 15:24:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:24:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:24:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:24:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-23 15:24:23,669 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-23 15:24:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:23,669 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-23 15:24:23,669 INFO L472 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-23 15:24:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-23 15:24:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:24:23,670 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:23,670 INFO L353 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-23 15:24:23,670 INFO L414 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-23 15:24:23,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:24,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:24,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:24:24,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:24:24,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:24:24,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:24:24,191 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-23 15:24:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:24,478 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-23 15:24:24,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:24:24,478 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-23 15:24:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:24,478 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:24:24,479 INFO L226 Difference]: Without dead ends: 247 [2018-07-23 15:24:24,479 INFO L573 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 [2018-07-23 15:24:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-23 15:24:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-23 15:24:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-23 15:24:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-23 15:24:24,483 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-23 15:24:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:24,483 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-23 15:24:24,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:24:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-23 15:24:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 15:24:24,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:24,484 INFO L353 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-23 15:24:24,484 INFO L414 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-23 15:24:24,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:25,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:25,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:24:25,063 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:24:25,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:24:25,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:24:25,065 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-23 15:24:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:25,350 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-23 15:24:25,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-23 15:24:25,350 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-23 15:24:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:25,351 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:24:25,351 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:24:25,353 INFO L573 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 [2018-07-23 15:24:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:24:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:24:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:24:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-23 15:24:25,357 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-23 15:24:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:25,358 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-23 15:24:25,358 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:24:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-23 15:24:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:24:25,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:25,359 INFO L353 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-23 15:24:25,360 INFO L414 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-23 15:24:25,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:26,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:26,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:24:26,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:24:26,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:24:26,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:24:26,043 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-23 15:24:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:26,276 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-23 15:24:26,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:24:26,276 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-23 15:24:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:26,277 INFO L225 Difference]: With dead ends: 253 [2018-07-23 15:24:26,277 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:24:26,278 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:24:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:24:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:24:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:24:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-23 15:24:26,283 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-23 15:24:26,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:26,283 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-23 15:24:26,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:24:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-23 15:24:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:24:26,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:26,284 INFO L353 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-23 15:24:26,285 INFO L414 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-23 15:24:26,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:26,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:26,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-23 15:24:26,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-23 15:24:26,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-23 15:24:26,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:24:26,863 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-23 15:24:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:26,996 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-23 15:24:26,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-23 15:24:26,996 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-23 15:24:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:26,997 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:24:26,997 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:24:26,998 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:24:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:24:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:24:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:24:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-23 15:24:27,002 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-23 15:24:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:27,003 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-23 15:24:27,003 INFO L472 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-23 15:24:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-23 15:24:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:24:27,004 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:27,004 INFO L353 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-23 15:24:27,004 INFO L414 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-23 15:24:27,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:27,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:27,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:24:27,642 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:24:27,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:24:27,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:24:27,644 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-23 15:24:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:27,955 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-23 15:24:27,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:24:27,955 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-23 15:24:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:27,956 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:24:27,956 INFO L226 Difference]: Without dead ends: 255 [2018-07-23 15:24:27,957 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:24:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-23 15:24:27,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-23 15:24:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-23 15:24:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-23 15:24:27,960 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-23 15:24:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:27,960 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-23 15:24:27,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:24:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-23 15:24:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-23 15:24:27,961 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:27,961 INFO L353 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-23 15:24:27,961 INFO L414 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-23 15:24:27,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:28,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:28,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:24:28,627 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:24:28,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:24:28,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:24:28,629 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-23 15:24:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:28,804 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-23 15:24:28,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-23 15:24:28,804 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-23 15:24:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:28,804 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:24:28,804 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:24:28,805 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:24:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:24:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-23 15:24:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-23 15:24:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-23 15:24:28,810 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-23 15:24:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:28,810 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-23 15:24:28,810 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:24:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-23 15:24:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 15:24:28,811 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:28,812 INFO L353 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-23 15:24:28,812 INFO L414 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-23 15:24:28,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:29,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:29,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:24:29,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:24:29,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:24:29,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:24:29,416 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-23 15:24:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:29,737 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-23 15:24:29,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:24:29,737 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-23 15:24:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:29,738 INFO L225 Difference]: With dead ends: 261 [2018-07-23 15:24:29,738 INFO L226 Difference]: Without dead ends: 259 [2018-07-23 15:24:29,740 INFO L573 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 [2018-07-23 15:24:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-23 15:24:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-23 15:24:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-23 15:24:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-23 15:24:29,745 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-23 15:24:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:29,745 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-23 15:24:29,745 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:24:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-23 15:24:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-23 15:24:29,746 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:29,746 INFO L353 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-23 15:24:29,747 INFO L414 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-23 15:24:29,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:30,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:30,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-23 15:24:30,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-23 15:24:30,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-23 15:24:30,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:24:30,378 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-23 15:24:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:30,577 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-23 15:24:30,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-23 15:24:30,578 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-23 15:24:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:30,578 INFO L225 Difference]: With dead ends: 263 [2018-07-23 15:24:30,579 INFO L226 Difference]: Without dead ends: 261 [2018-07-23 15:24:30,580 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:24:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-23 15:24:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-23 15:24:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-23 15:24:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-23 15:24:30,585 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-23 15:24:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:30,586 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-23 15:24:30,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-23 15:24:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-23 15:24:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-23 15:24:30,587 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:30,587 INFO L353 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-23 15:24:30,587 INFO L414 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-23 15:24:30,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:31,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:31,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-23 15:24:31,319 INFO L450 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-23 15:24:31,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-23 15:24:31,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:24:31,321 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-23 15:24:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:31,600 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-23 15:24:31,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:24:31,600 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-23 15:24:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:31,601 INFO L225 Difference]: With dead ends: 265 [2018-07-23 15:24:31,601 INFO L226 Difference]: Without dead ends: 263 [2018-07-23 15:24:31,602 INFO L573 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 [2018-07-23 15:24:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-23 15:24:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-23 15:24:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-23 15:24:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-23 15:24:31,605 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-23 15:24:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:31,606 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-23 15:24:31,606 INFO L472 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-23 15:24:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-23 15:24:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-23 15:24:31,607 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:31,607 INFO L353 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-23 15:24:31,607 INFO L414 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-23 15:24:31,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:32,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:32,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:24:32,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:24:32,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:24:32,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:24:32,383 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-23 15:24:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:32,719 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-23 15:24:32,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-23 15:24:32,720 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-23 15:24:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:32,720 INFO L225 Difference]: With dead ends: 267 [2018-07-23 15:24:32,720 INFO L226 Difference]: Without dead ends: 265 [2018-07-23 15:24:32,721 INFO L573 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 [2018-07-23 15:24:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-23 15:24:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-23 15:24:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-23 15:24:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-23 15:24:32,726 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-23 15:24:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:32,727 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-23 15:24:32,727 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:24:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-23 15:24:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-23 15:24:32,728 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:32,728 INFO L353 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-23 15:24:32,728 INFO L414 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-23 15:24:32,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:33,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:33,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:24:33,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:24:33,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:24:33,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:24:33,454 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-23 15:24:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:33,628 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-23 15:24:33,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:24:33,628 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-23 15:24:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:33,629 INFO L225 Difference]: With dead ends: 269 [2018-07-23 15:24:33,629 INFO L226 Difference]: Without dead ends: 267 [2018-07-23 15:24:33,630 INFO L573 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 [2018-07-23 15:24:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-23 15:24:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-23 15:24:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-23 15:24:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-23 15:24:33,633 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-23 15:24:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:33,633 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-23 15:24:33,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:24:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-23 15:24:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 15:24:33,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:33,634 INFO L353 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-23 15:24:33,634 INFO L414 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-23 15:24:33,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:34,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:34,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-23 15:24:34,264 INFO L450 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-23 15:24:34,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-23 15:24:34,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:24:34,266 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-23 15:24:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:34,582 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-23 15:24:34,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-23 15:24:34,583 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-23 15:24:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:34,583 INFO L225 Difference]: With dead ends: 271 [2018-07-23 15:24:34,583 INFO L226 Difference]: Without dead ends: 269 [2018-07-23 15:24:34,584 INFO L573 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 [2018-07-23 15:24:34,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-23 15:24:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-23 15:24:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-23 15:24:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-23 15:24:34,587 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-23 15:24:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:34,587 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-23 15:24:34,588 INFO L472 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-23 15:24:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-23 15:24:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-23 15:24:34,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:34,588 INFO L353 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-23 15:24:34,588 INFO L414 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:34,589 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-23 15:24:34,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:35,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:35,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-23 15:24:35,304 INFO L450 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-23 15:24:35,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-23 15:24:35,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:24:35,305 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-23 15:24:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:35,720 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-23 15:24:35,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:24:35,720 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-23 15:24:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:35,721 INFO L225 Difference]: With dead ends: 273 [2018-07-23 15:24:35,721 INFO L226 Difference]: Without dead ends: 271 [2018-07-23 15:24:35,721 INFO L573 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 [2018-07-23 15:24:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-23 15:24:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-23 15:24:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-23 15:24:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-23 15:24:35,725 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-23 15:24:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:35,726 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-23 15:24:35,726 INFO L472 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-23 15:24:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-23 15:24:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-23 15:24:35,727 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:35,727 INFO L353 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-23 15:24:35,727 INFO L414 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-23 15:24:35,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:36,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:36,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:24:36,392 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:24:36,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:24:36,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:24:36,395 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-23 15:24:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:36,643 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-23 15:24:36,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-23 15:24:36,644 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-23 15:24:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:36,644 INFO L225 Difference]: With dead ends: 275 [2018-07-23 15:24:36,644 INFO L226 Difference]: Without dead ends: 273 [2018-07-23 15:24:36,645 INFO L573 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 [2018-07-23 15:24:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-23 15:24:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-23 15:24:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-23 15:24:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-23 15:24:36,650 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-23 15:24:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:36,650 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-23 15:24:36,650 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:24:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-23 15:24:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-23 15:24:36,651 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:36,651 INFO L353 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-23 15:24:36,651 INFO L414 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-23 15:24:36,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:37,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:37,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:24:37,356 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:24:37,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:24:37,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:24:37,358 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-23 15:24:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:37,515 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-23 15:24:37,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:24:37,516 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-23 15:24:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:37,516 INFO L225 Difference]: With dead ends: 277 [2018-07-23 15:24:37,517 INFO L226 Difference]: Without dead ends: 275 [2018-07-23 15:24:37,518 INFO L573 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 [2018-07-23 15:24:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-23 15:24:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-23 15:24:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-23 15:24:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-23 15:24:37,523 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-23 15:24:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:37,524 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-23 15:24:37,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:24:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-23 15:24:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-23 15:24:37,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:37,525 INFO L353 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-23 15:24:37,526 INFO L414 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-23 15:24:37,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:38,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:38,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-23 15:24:38,537 INFO L450 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-23 15:24:38,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-23 15:24:38,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:24:38,539 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-23 15:24:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:38,934 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-23 15:24:38,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-23 15:24:38,934 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-23 15:24:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:38,935 INFO L225 Difference]: With dead ends: 279 [2018-07-23 15:24:38,935 INFO L226 Difference]: Without dead ends: 277 [2018-07-23 15:24:38,937 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:24:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-23 15:24:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-23 15:24:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-23 15:24:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-23 15:24:38,942 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-23 15:24:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:38,942 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-23 15:24:38,942 INFO L472 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-23 15:24:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-23 15:24:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-23 15:24:38,943 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:38,944 INFO L353 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-23 15:24:38,944 INFO L414 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-23 15:24:38,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:39,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:39,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-23 15:24:39,877 INFO L450 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-23 15:24:39,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-23 15:24:39,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:24:39,879 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-23 15:24:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:40,320 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-23 15:24:40,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:24:40,321 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-23 15:24:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:40,321 INFO L225 Difference]: With dead ends: 281 [2018-07-23 15:24:40,321 INFO L226 Difference]: Without dead ends: 279 [2018-07-23 15:24:40,323 INFO L573 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 [2018-07-23 15:24:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-23 15:24:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-23 15:24:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-23 15:24:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-23 15:24:40,326 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-23 15:24:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:40,327 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-23 15:24:40,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-23 15:24:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-23 15:24:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-23 15:24:40,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:40,328 INFO L353 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-23 15:24:40,328 INFO L414 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:40,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-23 15:24:40,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:41,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:41,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:24:41,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:24:41,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:24:41,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:24:41,155 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-23 15:24:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:41,569 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-23 15:24:41,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-23 15:24:41,569 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-23 15:24:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:41,570 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:24:41,570 INFO L226 Difference]: Without dead ends: 281 [2018-07-23 15:24:41,571 INFO L573 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 [2018-07-23 15:24:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-23 15:24:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-23 15:24:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-23 15:24:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-23 15:24:41,576 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-23 15:24:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:41,576 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-23 15:24:41,576 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:24:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-23 15:24:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-23 15:24:41,578 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:41,578 INFO L353 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-23 15:24:41,578 INFO L414 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-23 15:24:41,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:42,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:42,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:24:42,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:24:42,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:24:42,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:24:42,410 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-23 15:24:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:42,844 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-23 15:24:42,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:24:42,844 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-23 15:24:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:42,845 INFO L225 Difference]: With dead ends: 285 [2018-07-23 15:24:42,845 INFO L226 Difference]: Without dead ends: 283 [2018-07-23 15:24:42,847 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:24:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-23 15:24:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-23 15:24:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-23 15:24:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-23 15:24:42,852 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-23 15:24:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:42,852 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-23 15:24:42,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:24:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-23 15:24:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-23 15:24:42,854 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:42,854 INFO L353 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-23 15:24:42,854 INFO L414 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:42,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-23 15:24:42,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:43,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:43,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-23 15:24:43,734 INFO L450 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-23 15:24:43,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-23 15:24:43,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:24:43,736 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-23 15:24:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:44,184 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-23 15:24:44,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-23 15:24:44,185 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-23 15:24:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:44,186 INFO L225 Difference]: With dead ends: 287 [2018-07-23 15:24:44,186 INFO L226 Difference]: Without dead ends: 285 [2018-07-23 15:24:44,187 INFO L573 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 [2018-07-23 15:24:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-23 15:24:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-23 15:24:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-23 15:24:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-23 15:24:44,190 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-23 15:24:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:44,190 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-23 15:24:44,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-23 15:24:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-23 15:24:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-23 15:24:44,191 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:44,191 INFO L353 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-23 15:24:44,191 INFO L414 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:44,191 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-23 15:24:44,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:45,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:45,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-23 15:24:45,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-23 15:24:45,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-23 15:24:45,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:24:45,043 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-23 15:24:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:45,496 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-23 15:24:45,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:24:45,497 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-23 15:24:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:45,497 INFO L225 Difference]: With dead ends: 289 [2018-07-23 15:24:45,497 INFO L226 Difference]: Without dead ends: 287 [2018-07-23 15:24:45,499 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:24:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-23 15:24:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-23 15:24:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-23 15:24:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-23 15:24:45,504 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-23 15:24:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:45,504 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-23 15:24:45,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-23 15:24:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-23 15:24:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-23 15:24:45,506 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:45,506 INFO L353 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-23 15:24:45,506 INFO L414 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-23 15:24:45,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:46,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:46,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:24:46,537 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:24:46,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:24:46,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:24:46,539 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-23 15:24:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:47,008 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-23 15:24:47,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-23 15:24:47,009 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-23 15:24:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:47,009 INFO L225 Difference]: With dead ends: 291 [2018-07-23 15:24:47,009 INFO L226 Difference]: Without dead ends: 289 [2018-07-23 15:24:47,010 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:24:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-23 15:24:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-23 15:24:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-23 15:24:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-23 15:24:47,015 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-23 15:24:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:47,015 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-23 15:24:47,015 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:24:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-23 15:24:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-23 15:24:47,017 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:47,017 INFO L353 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-23 15:24:47,017 INFO L414 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-23 15:24:47,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:48,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:48,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:24:48,164 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:24:48,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:24:48,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:24:48,168 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-23 15:24:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:48,779 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-23 15:24:48,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:24:48,779 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-23 15:24:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:48,779 INFO L225 Difference]: With dead ends: 293 [2018-07-23 15:24:48,780 INFO L226 Difference]: Without dead ends: 291 [2018-07-23 15:24:48,781 INFO L573 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 [2018-07-23 15:24:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-23 15:24:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-23 15:24:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-23 15:24:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-23 15:24:48,784 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-23 15:24:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:48,784 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-23 15:24:48,784 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:24:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-23 15:24:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-23 15:24:48,785 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:48,786 INFO L353 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-23 15:24:48,786 INFO L414 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-23 15:24:48,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:49,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:49,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-23 15:24:49,643 INFO L450 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-23 15:24:49,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-23 15:24:49,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:24:49,645 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-23 15:24:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:49,972 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-23 15:24:49,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-23 15:24:49,973 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-23 15:24:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:49,973 INFO L225 Difference]: With dead ends: 295 [2018-07-23 15:24:49,973 INFO L226 Difference]: Without dead ends: 293 [2018-07-23 15:24:49,974 INFO L573 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 [2018-07-23 15:24:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-23 15:24:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-23 15:24:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-23 15:24:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-23 15:24:49,977 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-23 15:24:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:49,978 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-23 15:24:49,978 INFO L472 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-23 15:24:49,978 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-23 15:24:49,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-23 15:24:49,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:49,979 INFO L353 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-23 15:24:49,979 INFO L414 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-23 15:24:49,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:50,897 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:50,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-23 15:24:50,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-23 15:24:50,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-23 15:24:50,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:24:50,899 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-23 15:24:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:51,098 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-23 15:24:51,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:24:51,099 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-23 15:24:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:51,099 INFO L225 Difference]: With dead ends: 297 [2018-07-23 15:24:51,099 INFO L226 Difference]: Without dead ends: 295 [2018-07-23 15:24:51,101 INFO L573 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 [2018-07-23 15:24:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-23 15:24:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-23 15:24:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-23 15:24:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-23 15:24:51,104 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-23 15:24:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:51,105 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-23 15:24:51,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-23 15:24:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-23 15:24:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-23 15:24:51,106 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:51,106 INFO L353 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-23 15:24:51,107 INFO L414 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-23 15:24:51,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:52,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:52,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:24:52,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:24:52,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:24:52,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:24:52,052 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-23 15:24:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:52,555 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-23 15:24:52,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-23 15:24:52,555 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-23 15:24:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:52,556 INFO L225 Difference]: With dead ends: 299 [2018-07-23 15:24:52,556 INFO L226 Difference]: Without dead ends: 297 [2018-07-23 15:24:52,557 INFO L573 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 [2018-07-23 15:24:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-23 15:24:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-23 15:24:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-23 15:24:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-23 15:24:52,561 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-23 15:24:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:52,561 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-23 15:24:52,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:24:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-23 15:24:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-23 15:24:52,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:52,562 INFO L353 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-23 15:24:52,562 INFO L414 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-23 15:24:52,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:53,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:53,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:24:53,485 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:24:53,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:24:53,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:24:53,488 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-23 15:24:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:54,223 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-23 15:24:54,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:24:54,223 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-23 15:24:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:54,224 INFO L225 Difference]: With dead ends: 301 [2018-07-23 15:24:54,224 INFO L226 Difference]: Without dead ends: 299 [2018-07-23 15:24:54,226 INFO L573 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 [2018-07-23 15:24:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-23 15:24:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-23 15:24:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-23 15:24:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-23 15:24:54,231 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-23 15:24:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:54,232 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-23 15:24:54,232 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:24:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-23 15:24:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-23 15:24:54,233 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:54,233 INFO L353 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-23 15:24:54,233 INFO L414 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-23 15:24:54,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:55,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:55,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-23 15:24:55,438 INFO L450 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-23 15:24:55,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-23 15:24:55,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:24:55,440 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-23 15:24:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:56,034 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-23 15:24:56,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-23 15:24:56,034 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-23 15:24:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:56,034 INFO L225 Difference]: With dead ends: 303 [2018-07-23 15:24:56,034 INFO L226 Difference]: Without dead ends: 301 [2018-07-23 15:24:56,035 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:24:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-23 15:24:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-23 15:24:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-23 15:24:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-23 15:24:56,038 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-23 15:24:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:56,038 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-23 15:24:56,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-23 15:24:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-23 15:24:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-23 15:24:56,040 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:56,040 INFO L353 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-23 15:24:56,040 INFO L414 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:56,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-23 15:24:56,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:57,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:57,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-23 15:24:57,116 INFO L450 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-23 15:24:57,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-23 15:24:57,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:24:57,120 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-23 15:24:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:57,352 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-23 15:24:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:24:57,352 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-23 15:24:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:57,353 INFO L225 Difference]: With dead ends: 305 [2018-07-23 15:24:57,353 INFO L226 Difference]: Without dead ends: 303 [2018-07-23 15:24:57,354 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:24:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-23 15:24:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-23 15:24:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-23 15:24:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-23 15:24:57,357 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-23 15:24:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:57,358 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-23 15:24:57,358 INFO L472 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-23 15:24:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-23 15:24:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-23 15:24:57,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:57,359 INFO L353 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-23 15:24:57,359 INFO L414 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-23 15:24:57,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:24:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:24:58,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:24:58,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:24:58,296 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:24:58,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:24:58,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:24:58,299 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-23 15:24:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:24:59,027 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-23 15:24:59,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-23 15:24:59,028 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-23 15:24:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:24:59,028 INFO L225 Difference]: With dead ends: 307 [2018-07-23 15:24:59,028 INFO L226 Difference]: Without dead ends: 305 [2018-07-23 15:24:59,030 INFO L573 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 [2018-07-23 15:24:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-23 15:24:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-23 15:24:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-23 15:24:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-23 15:24:59,033 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-23 15:24:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:24:59,033 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-23 15:24:59,033 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:24:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-23 15:24:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-23 15:24:59,034 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:24:59,034 INFO L353 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-23 15:24:59,034 INFO L414 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:24:59,034 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-23 15:24:59,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:24:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:00,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:00,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:25:00,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:25:00,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:25:00,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:25:00,088 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-23 15:25:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:00,704 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-23 15:25:00,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:25:00,705 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-23 15:25:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:00,705 INFO L225 Difference]: With dead ends: 309 [2018-07-23 15:25:00,705 INFO L226 Difference]: Without dead ends: 307 [2018-07-23 15:25:00,707 INFO L573 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 [2018-07-23 15:25:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-23 15:25:00,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-23 15:25:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-23 15:25:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-23 15:25:00,710 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-23 15:25:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:00,711 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-23 15:25:00,711 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:25:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-23 15:25:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-23 15:25:00,711 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:00,711 INFO L353 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-23 15:25:00,712 INFO L414 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-23 15:25:00,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:01,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:01,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-23 15:25:01,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-23 15:25:01,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-23 15:25:01,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:25:01,704 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-23 15:25:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:02,158 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-23 15:25:02,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-23 15:25:02,159 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-23 15:25:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:02,160 INFO L225 Difference]: With dead ends: 311 [2018-07-23 15:25:02,160 INFO L226 Difference]: Without dead ends: 309 [2018-07-23 15:25:02,162 INFO L573 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 [2018-07-23 15:25:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-23 15:25:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-23 15:25:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-23 15:25:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-23 15:25:02,167 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-23 15:25:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:02,167 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-23 15:25:02,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-23 15:25:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-23 15:25:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-23 15:25:02,169 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:02,169 INFO L353 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-23 15:25:02,169 INFO L414 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-23 15:25:02,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:03,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:03,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-23 15:25:03,295 INFO L450 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-23 15:25:03,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-23 15:25:03,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:25:03,296 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-23 15:25:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:03,904 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-23 15:25:03,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:25:03,904 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-23 15:25:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:03,905 INFO L225 Difference]: With dead ends: 313 [2018-07-23 15:25:03,905 INFO L226 Difference]: Without dead ends: 311 [2018-07-23 15:25:03,906 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:25:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-23 15:25:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-23 15:25:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-23 15:25:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-23 15:25:03,909 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-23 15:25:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:03,909 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-23 15:25:03,909 INFO L472 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-23 15:25:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-23 15:25:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-23 15:25:03,910 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:03,910 INFO L353 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-23 15:25:03,910 INFO L414 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-23 15:25:03,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:04,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:04,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:25:04,911 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:25:04,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:25:04,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:25:04,913 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-23 15:25:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:05,248 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-23 15:25:05,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-23 15:25:05,248 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-23 15:25:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:05,249 INFO L225 Difference]: With dead ends: 315 [2018-07-23 15:25:05,249 INFO L226 Difference]: Without dead ends: 313 [2018-07-23 15:25:05,250 INFO L573 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 [2018-07-23 15:25:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-23 15:25:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-23 15:25:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-23 15:25:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-23 15:25:05,254 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-23 15:25:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:05,254 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-23 15:25:05,254 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:25:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-23 15:25:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-23 15:25:05,255 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:05,255 INFO L353 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-23 15:25:05,255 INFO L414 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:05,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-23 15:25:05,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:06,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:06,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:25:06,264 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:25:06,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:25:06,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:25:06,268 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-23 15:25:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:06,961 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-23 15:25:06,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:25:06,961 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-23 15:25:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:06,962 INFO L225 Difference]: With dead ends: 317 [2018-07-23 15:25:06,962 INFO L226 Difference]: Without dead ends: 315 [2018-07-23 15:25:06,963 INFO L573 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 [2018-07-23 15:25:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-23 15:25:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-23 15:25:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-23 15:25:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-23 15:25:06,968 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-23 15:25:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:06,968 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-23 15:25:06,968 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:25:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-23 15:25:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-23 15:25:06,969 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:06,970 INFO L353 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-23 15:25:06,970 INFO L414 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-23 15:25:06,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:08,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:08,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-23 15:25:08,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-23 15:25:08,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-23 15:25:08,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:25:08,244 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-23 15:25:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:08,727 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-23 15:25:08,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-23 15:25:08,727 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-23 15:25:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:08,728 INFO L225 Difference]: With dead ends: 319 [2018-07-23 15:25:08,728 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:25:08,729 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:25:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:25:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-23 15:25:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-23 15:25:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-23 15:25:08,732 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-23 15:25:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:08,732 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-23 15:25:08,732 INFO L472 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-23 15:25:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-23 15:25:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-23 15:25:08,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:08,733 INFO L353 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-23 15:25:08,733 INFO L414 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-23 15:25:08,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:09,795 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:09,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-23 15:25:09,796 INFO L450 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-23 15:25:09,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-23 15:25:09,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:25:09,798 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-23 15:25:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:10,467 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-23 15:25:10,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:25:10,468 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-23 15:25:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:10,468 INFO L225 Difference]: With dead ends: 321 [2018-07-23 15:25:10,468 INFO L226 Difference]: Without dead ends: 319 [2018-07-23 15:25:10,470 INFO L573 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 [2018-07-23 15:25:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-23 15:25:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-23 15:25:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-23 15:25:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-23 15:25:10,473 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-23 15:25:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:10,473 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-23 15:25:10,473 INFO L472 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-23 15:25:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-23 15:25:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-23 15:25:10,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:10,474 INFO L353 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-23 15:25:10,474 INFO L414 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:10,474 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-23 15:25:10,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:11,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:11,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:25:11,567 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:25:11,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:25:11,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:25:11,570 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-23 15:25:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:12,422 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-23 15:25:12,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-23 15:25:12,422 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-23 15:25:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:12,423 INFO L225 Difference]: With dead ends: 323 [2018-07-23 15:25:12,423 INFO L226 Difference]: Without dead ends: 321 [2018-07-23 15:25:12,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:25:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-23 15:25:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-23 15:25:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-23 15:25:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-23 15:25:12,427 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-23 15:25:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:12,427 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-23 15:25:12,428 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:25:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-23 15:25:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-23 15:25:12,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:12,428 INFO L353 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-23 15:25:12,429 INFO L414 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:12,429 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-23 15:25:12,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:13,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:13,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:25:13,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:25:13,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:25:13,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:25:13,503 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-23 15:25:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:13,786 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-23 15:25:13,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:25:13,786 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-23 15:25:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:13,786 INFO L225 Difference]: With dead ends: 325 [2018-07-23 15:25:13,786 INFO L226 Difference]: Without dead ends: 323 [2018-07-23 15:25:13,788 INFO L573 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 [2018-07-23 15:25:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-23 15:25:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-23 15:25:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-23 15:25:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-23 15:25:13,791 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-23 15:25:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:13,791 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-23 15:25:13,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:25:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-23 15:25:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-23 15:25:13,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:13,792 INFO L353 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-23 15:25:13,792 INFO L414 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-23 15:25:13,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:14,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:14,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-23 15:25:14,929 INFO L450 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-23 15:25:14,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-23 15:25:14,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:25:14,930 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-23 15:25:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:15,661 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-23 15:25:15,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-23 15:25:15,661 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-23 15:25:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:15,661 INFO L225 Difference]: With dead ends: 327 [2018-07-23 15:25:15,662 INFO L226 Difference]: Without dead ends: 325 [2018-07-23 15:25:15,663 INFO L573 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 [2018-07-23 15:25:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-23 15:25:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-23 15:25:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-23 15:25:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-23 15:25:15,666 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-23 15:25:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:15,666 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-23 15:25:15,666 INFO L472 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-23 15:25:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-23 15:25:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-23 15:25:15,667 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:15,667 INFO L353 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-23 15:25:15,667 INFO L414 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:15,667 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-23 15:25:15,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:16,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:16,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-23 15:25:16,745 INFO L450 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-23 15:25:16,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-23 15:25:16,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:25:16,748 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-23 15:25:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:17,619 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-23 15:25:17,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:25:17,619 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-23 15:25:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:17,619 INFO L225 Difference]: With dead ends: 329 [2018-07-23 15:25:17,619 INFO L226 Difference]: Without dead ends: 327 [2018-07-23 15:25:17,622 INFO L573 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 [2018-07-23 15:25:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-23 15:25:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-23 15:25:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-23 15:25:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-23 15:25:17,626 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-23 15:25:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:17,627 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-23 15:25:17,627 INFO L472 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-23 15:25:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-23 15:25:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-23 15:25:17,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:17,628 INFO L353 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-23 15:25:17,628 INFO L414 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-23 15:25:17,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:18,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:18,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:25:18,805 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:25:18,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:25:18,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:25:18,807 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-23 15:25:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:19,452 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-23 15:25:19,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-23 15:25:19,452 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-23 15:25:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:19,452 INFO L225 Difference]: With dead ends: 331 [2018-07-23 15:25:19,453 INFO L226 Difference]: Without dead ends: 329 [2018-07-23 15:25:19,453 INFO L573 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 [2018-07-23 15:25:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-23 15:25:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-23 15:25:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-23 15:25:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-23 15:25:19,456 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-23 15:25:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:19,457 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-23 15:25:19,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:25:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-23 15:25:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-23 15:25:19,458 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:19,458 INFO L353 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-23 15:25:19,458 INFO L414 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:19,458 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-23 15:25:19,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:20,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:20,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:25:20,569 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:25:20,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:25:20,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:25:20,572 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-23 15:25:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:20,844 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-23 15:25:20,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:25:20,844 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-23 15:25:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:20,845 INFO L225 Difference]: With dead ends: 333 [2018-07-23 15:25:20,845 INFO L226 Difference]: Without dead ends: 331 [2018-07-23 15:25:20,846 INFO L573 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 [2018-07-23 15:25:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-23 15:25:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-23 15:25:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-23 15:25:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-23 15:25:20,849 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-23 15:25:20,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:20,849 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-23 15:25:20,850 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:25:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-23 15:25:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-23 15:25:20,850 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:20,850 INFO L353 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-23 15:25:20,851 INFO L414 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:20,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-23 15:25:20,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:22,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:22,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-23 15:25:22,015 INFO L450 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-23 15:25:22,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-23 15:25:22,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:25:22,017 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-23 15:25:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:22,446 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-23 15:25:22,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-23 15:25:22,446 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-23 15:25:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:22,446 INFO L225 Difference]: With dead ends: 335 [2018-07-23 15:25:22,447 INFO L226 Difference]: Without dead ends: 333 [2018-07-23 15:25:22,447 INFO L573 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 [2018-07-23 15:25:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-23 15:25:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-23 15:25:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-23 15:25:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-23 15:25:22,452 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-23 15:25:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:22,452 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-23 15:25:22,452 INFO L472 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-23 15:25:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-23 15:25:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-23 15:25:22,454 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:22,454 INFO L353 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-23 15:25:22,454 INFO L414 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-23 15:25:22,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:23,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:23,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-23 15:25:23,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-23 15:25:23,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-23 15:25:23,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:25:23,891 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-23 15:25:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:24,725 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-23 15:25:24,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:25:24,725 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-23 15:25:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:24,726 INFO L225 Difference]: With dead ends: 337 [2018-07-23 15:25:24,726 INFO L226 Difference]: Without dead ends: 335 [2018-07-23 15:25:24,727 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:25:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-23 15:25:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-23 15:25:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-23 15:25:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-23 15:25:24,731 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-23 15:25:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:24,731 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-23 15:25:24,731 INFO L472 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-23 15:25:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-23 15:25:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-23 15:25:24,732 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:24,732 INFO L353 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-23 15:25:24,732 INFO L414 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-23 15:25:24,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:25,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:25,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:25:25,873 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:25:25,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:25:25,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:25:25,875 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-23 15:25:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:26,683 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-23 15:25:26,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-23 15:25:26,684 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-23 15:25:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:26,684 INFO L225 Difference]: With dead ends: 339 [2018-07-23 15:25:26,684 INFO L226 Difference]: Without dead ends: 337 [2018-07-23 15:25:26,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:25:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-23 15:25:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-23 15:25:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-23 15:25:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-23 15:25:26,688 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-23 15:25:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:26,688 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-23 15:25:26,688 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:25:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-23 15:25:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-23 15:25:26,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:26,689 INFO L353 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-23 15:25:26,689 INFO L414 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:26,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-23 15:25:26,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:27,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:27,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:25:27,862 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:25:27,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:25:27,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:25:27,865 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-23 15:25:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:28,798 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-23 15:25:28,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:25:28,798 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-23 15:25:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:28,799 INFO L225 Difference]: With dead ends: 341 [2018-07-23 15:25:28,799 INFO L226 Difference]: Without dead ends: 339 [2018-07-23 15:25:28,801 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:25:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-23 15:25:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-23 15:25:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-23 15:25:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-23 15:25:28,804 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-23 15:25:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:28,804 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-23 15:25:28,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:25:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-23 15:25:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-23 15:25:28,805 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:28,805 INFO L353 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-23 15:25:28,805 INFO L414 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:28,805 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-23 15:25:28,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:30,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:30,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-23 15:25:30,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-23 15:25:30,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-23 15:25:30,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:25:30,066 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-23 15:25:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:31,001 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-23 15:25:31,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-23 15:25:31,002 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-23 15:25:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:31,002 INFO L225 Difference]: With dead ends: 343 [2018-07-23 15:25:31,002 INFO L226 Difference]: Without dead ends: 341 [2018-07-23 15:25:31,003 INFO L573 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 [2018-07-23 15:25:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-23 15:25:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-23 15:25:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-23 15:25:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-23 15:25:31,006 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-23 15:25:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:31,006 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-23 15:25:31,006 INFO L472 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-23 15:25:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-23 15:25:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-23 15:25:31,007 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:31,007 INFO L353 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-23 15:25:31,007 INFO L414 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-23 15:25:31,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:32,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:32,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-23 15:25:32,253 INFO L450 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-23 15:25:32,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-23 15:25:32,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:25:32,256 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-23 15:25:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:33,246 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-23 15:25:33,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:25:33,246 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-23 15:25:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:33,246 INFO L225 Difference]: With dead ends: 345 [2018-07-23 15:25:33,246 INFO L226 Difference]: Without dead ends: 343 [2018-07-23 15:25:33,248 INFO L573 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 [2018-07-23 15:25:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-23 15:25:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-23 15:25:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-23 15:25:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-23 15:25:33,251 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-23 15:25:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:33,251 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-23 15:25:33,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-23 15:25:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-23 15:25:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-23 15:25:33,252 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:33,253 INFO L353 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-23 15:25:33,253 INFO L414 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-23 15:25:33,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:34,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:34,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:25:34,522 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:25:34,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:25:34,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:25:34,524 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-23 15:25:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:35,662 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-23 15:25:35,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-23 15:25:35,663 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-23 15:25:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:35,663 INFO L225 Difference]: With dead ends: 347 [2018-07-23 15:25:35,663 INFO L226 Difference]: Without dead ends: 345 [2018-07-23 15:25:35,664 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:25:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-23 15:25:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-23 15:25:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-23 15:25:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-23 15:25:35,668 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-23 15:25:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:35,668 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-23 15:25:35,668 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:25:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-23 15:25:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-23 15:25:35,669 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:35,669 INFO L353 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-23 15:25:35,669 INFO L414 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-23 15:25:35,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:37,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:37,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:25:37,105 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:25:37,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:25:37,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:25:37,110 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-23 15:25:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,099 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-23 15:25:38,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:25:38,099 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-23 15:25:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,100 INFO L225 Difference]: With dead ends: 349 [2018-07-23 15:25:38,100 INFO L226 Difference]: Without dead ends: 347 [2018-07-23 15:25:38,102 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:25:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-23 15:25:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-23 15:25:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-23 15:25:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-23 15:25:38,105 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-23 15:25:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,105 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-23 15:25:38,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:25:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-23 15:25:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-23 15:25:38,106 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,107 INFO L353 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-23 15:25:38,107 INFO L414 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,107 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-23 15:25:38,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:39,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-23 15:25:39,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-23 15:25:39,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-23 15:25:39,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:25:39,417 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-23 15:25:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,100 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-23 15:25:40,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-23 15:25:40,100 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-23 15:25:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,101 INFO L225 Difference]: With dead ends: 351 [2018-07-23 15:25:40,101 INFO L226 Difference]: Without dead ends: 349 [2018-07-23 15:25:40,103 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:25:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-23 15:25:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-23 15:25:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-23 15:25:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-23 15:25:40,109 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-23 15:25:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,109 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-23 15:25:40,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-23 15:25:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-23 15:25:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-23 15:25:40,111 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,111 INFO L353 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-23 15:25:40,111 INFO L414 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-23 15:25:40,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:41,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-23 15:25:41,542 INFO L450 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-23 15:25:41,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-23 15:25:41,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:25:41,545 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-23 15:25:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,882 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-23 15:25:41,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:25:41,883 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-23 15:25:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,883 INFO L225 Difference]: With dead ends: 353 [2018-07-23 15:25:41,884 INFO L226 Difference]: Without dead ends: 351 [2018-07-23 15:25:41,886 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:25:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-23 15:25:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-23 15:25:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-23 15:25:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-23 15:25:41,890 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-23 15:25:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,890 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-23 15:25:41,890 INFO L472 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-23 15:25:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-23 15:25:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-23 15:25:41,891 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,891 INFO L353 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-23 15:25:41,891 INFO L414 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-23 15:25:41,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:43,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:25:43,244 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:25:43,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:25:43,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:25:43,247 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-23 15:25:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,787 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-23 15:25:43,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-23 15:25:43,787 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-23 15:25:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,788 INFO L225 Difference]: With dead ends: 355 [2018-07-23 15:25:43,788 INFO L226 Difference]: Without dead ends: 353 [2018-07-23 15:25:43,791 INFO L573 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 [2018-07-23 15:25:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-23 15:25:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-23 15:25:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-23 15:25:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-23 15:25:43,795 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-23 15:25:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,796 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-23 15:25:43,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:25:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-23 15:25:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-23 15:25:43,797 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,798 INFO L353 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-23 15:25:43,798 INFO L414 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-23 15:25:43,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:45,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:25:45,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:25:45,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:25:45,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:25:45,151 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-23 15:25:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:46,405 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-23 15:25:46,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:25:46,405 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-23 15:25:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:46,406 INFO L225 Difference]: With dead ends: 357 [2018-07-23 15:25:46,406 INFO L226 Difference]: Without dead ends: 355 [2018-07-23 15:25:46,409 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:25:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-23 15:25:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-23 15:25:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-23 15:25:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-23 15:25:46,414 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-23 15:25:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:46,414 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-23 15:25:46,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:25:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-23 15:25:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 15:25:46,416 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:46,416 INFO L353 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-23 15:25:46,416 INFO L414 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-23 15:25:46,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:47,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-23 15:25:47,839 INFO L450 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-23 15:25:47,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-23 15:25:47,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:25:47,842 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-23 15:25:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:49,008 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-23 15:25:49,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-23 15:25:49,009 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-23 15:25:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:49,009 INFO L225 Difference]: With dead ends: 359 [2018-07-23 15:25:49,009 INFO L226 Difference]: Without dead ends: 357 [2018-07-23 15:25:49,012 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:25:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-23 15:25:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-23 15:25:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-23 15:25:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-23 15:25:49,015 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-23 15:25:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:49,016 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-23 15:25:49,016 INFO L472 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-23 15:25:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-23 15:25:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-23 15:25:49,017 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:49,017 INFO L353 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-23 15:25:49,017 INFO L414 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:49,017 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-23 15:25:49,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:50,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:50,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-23 15:25:50,407 INFO L450 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-23 15:25:50,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-23 15:25:50,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:25:50,411 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-23 15:25:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:50,868 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-23 15:25:50,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:25:50,869 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-23 15:25:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:50,869 INFO L225 Difference]: With dead ends: 361 [2018-07-23 15:25:50,869 INFO L226 Difference]: Without dead ends: 359 [2018-07-23 15:25:50,871 INFO L573 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 [2018-07-23 15:25:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-23 15:25:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-23 15:25:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-23 15:25:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-23 15:25:50,874 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-23 15:25:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:50,875 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-23 15:25:50,875 INFO L472 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-23 15:25:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-23 15:25:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-23 15:25:50,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:50,876 INFO L353 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-23 15:25:50,876 INFO L414 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-23 15:25:50,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:52,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:52,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:25:52,228 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:25:52,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:25:52,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:25:52,232 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-23 15:25:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:53,137 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-23 15:25:53,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-23 15:25:53,137 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-23 15:25:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:53,138 INFO L225 Difference]: With dead ends: 363 [2018-07-23 15:25:53,138 INFO L226 Difference]: Without dead ends: 361 [2018-07-23 15:25:53,139 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:25:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-23 15:25:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-23 15:25:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-23 15:25:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-23 15:25:53,142 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-23 15:25:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:53,143 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-23 15:25:53,143 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:25:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-23 15:25:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-23 15:25:53,144 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:53,144 INFO L353 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-23 15:25:53,144 INFO L414 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-23 15:25:53,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:54,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:54,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:25:54,585 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:25:54,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:25:54,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:25:54,587 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-23 15:25:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:55,758 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-23 15:25:55,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:25:55,759 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-23 15:25:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:55,759 INFO L225 Difference]: With dead ends: 365 [2018-07-23 15:25:55,759 INFO L226 Difference]: Without dead ends: 363 [2018-07-23 15:25:55,760 INFO L573 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 [2018-07-23 15:25:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-23 15:25:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-23 15:25:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-23 15:25:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-23 15:25:55,763 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-23 15:25:55,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:55,764 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-23 15:25:55,764 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:25:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-23 15:25:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-23 15:25:55,765 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:55,765 INFO L353 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-23 15:25:55,765 INFO L414 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-23 15:25:55,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:57,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:57,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-23 15:25:57,257 INFO L450 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-23 15:25:57,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-23 15:25:57,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:25:57,261 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-23 15:25:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:57,632 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-23 15:25:57,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-23 15:25:57,632 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-23 15:25:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:57,633 INFO L225 Difference]: With dead ends: 367 [2018-07-23 15:25:57,633 INFO L226 Difference]: Without dead ends: 365 [2018-07-23 15:25:57,634 INFO L573 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 [2018-07-23 15:25:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-23 15:25:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-23 15:25:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-23 15:25:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-23 15:25:57,638 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-23 15:25:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:57,638 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-23 15:25:57,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-23 15:25:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-23 15:25:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-23 15:25:57,639 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:57,639 INFO L353 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-23 15:25:57,639 INFO L414 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-23 15:25:57,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:25:59,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:59,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-23 15:25:59,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-23 15:25:59,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-23 15:25:59,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:25:59,202 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-23 15:26:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:00,667 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-23 15:26:00,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:26:00,667 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-23 15:26:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:00,668 INFO L225 Difference]: With dead ends: 369 [2018-07-23 15:26:00,668 INFO L226 Difference]: Without dead ends: 367 [2018-07-23 15:26:00,669 INFO L573 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 [2018-07-23 15:26:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-23 15:26:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-23 15:26:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-23 15:26:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-23 15:26:00,673 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-23 15:26:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:00,673 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-23 15:26:00,673 INFO L472 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-23 15:26:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-23 15:26:00,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-23 15:26:00,674 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:00,674 INFO L353 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-23 15:26:00,674 INFO L414 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:00,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-23 15:26:00,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:02,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:02,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:26:02,247 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:26:02,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:26:02,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:26:02,251 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-23 15:26:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:02,807 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-23 15:26:02,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-23 15:26:02,808 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-23 15:26:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:02,808 INFO L225 Difference]: With dead ends: 371 [2018-07-23 15:26:02,808 INFO L226 Difference]: Without dead ends: 369 [2018-07-23 15:26:02,810 INFO L573 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 [2018-07-23 15:26:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-23 15:26:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-23 15:26:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-23 15:26:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-23 15:26:02,814 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-23 15:26:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:02,814 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-23 15:26:02,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:26:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-23 15:26:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-23 15:26:02,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:02,815 INFO L353 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-23 15:26:02,815 INFO L414 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-23 15:26:02,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:04,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:04,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:26:04,365 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:26:04,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:26:04,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:26:04,369 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-23 15:26:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:05,793 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-23 15:26:05,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:26:05,794 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-23 15:26:05,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:05,794 INFO L225 Difference]: With dead ends: 373 [2018-07-23 15:26:05,794 INFO L226 Difference]: Without dead ends: 371 [2018-07-23 15:26:05,796 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:26:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-23 15:26:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-23 15:26:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-23 15:26:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-23 15:26:05,799 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-23 15:26:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:05,800 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-23 15:26:05,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:26:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-23 15:26:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-23 15:26:05,801 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:05,801 INFO L353 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-23 15:26:05,801 INFO L414 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:05,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-23 15:26:05,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:07,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:07,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-23 15:26:07,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-23 15:26:07,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-23 15:26:07,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:26:07,350 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-23 15:26:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:07,806 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-23 15:26:07,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-23 15:26:07,806 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-23 15:26:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:07,807 INFO L225 Difference]: With dead ends: 375 [2018-07-23 15:26:07,807 INFO L226 Difference]: Without dead ends: 373 [2018-07-23 15:26:07,808 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:26:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-23 15:26:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-23 15:26:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-23 15:26:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-23 15:26:07,812 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-23 15:26:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:07,812 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-23 15:26:07,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-23 15:26:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-23 15:26:07,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-23 15:26:07,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:07,813 INFO L353 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-23 15:26:07,813 INFO L414 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-23 15:26:07,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:09,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:09,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-23 15:26:09,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-23 15:26:09,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-23 15:26:09,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:26:09,460 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-23 15:26:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:11,097 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-23 15:26:11,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:26:11,097 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-23 15:26:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:11,098 INFO L225 Difference]: With dead ends: 377 [2018-07-23 15:26:11,098 INFO L226 Difference]: Without dead ends: 375 [2018-07-23 15:26:11,100 INFO L573 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 [2018-07-23 15:26:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-23 15:26:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-23 15:26:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-23 15:26:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-23 15:26:11,103 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-23 15:26:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:11,103 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-23 15:26:11,103 INFO L472 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-23 15:26:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-23 15:26:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-23 15:26:11,104 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:11,105 INFO L353 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-23 15:26:11,105 INFO L414 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:11,105 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-23 15:26:11,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:12,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:12,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:26:12,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:26:12,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:26:12,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:26:12,795 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-23 15:26:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:13,419 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-23 15:26:13,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-23 15:26:13,420 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-23 15:26:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:13,420 INFO L225 Difference]: With dead ends: 379 [2018-07-23 15:26:13,420 INFO L226 Difference]: Without dead ends: 377 [2018-07-23 15:26:13,422 INFO L573 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 [2018-07-23 15:26:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-23 15:26:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-23 15:26:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-23 15:26:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-23 15:26:13,426 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-23 15:26:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:13,426 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-23 15:26:13,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:26:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-23 15:26:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-23 15:26:13,427 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:13,427 INFO L353 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-23 15:26:13,427 INFO L414 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-23 15:26:13,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:15,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:15,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:26:15,143 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:26:15,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:26:15,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:26:15,146 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-23 15:26:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:16,169 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-23 15:26:16,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:26:16,169 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-23 15:26:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:16,170 INFO L225 Difference]: With dead ends: 381 [2018-07-23 15:26:16,170 INFO L226 Difference]: Without dead ends: 379 [2018-07-23 15:26:16,171 INFO L573 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 [2018-07-23 15:26:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-23 15:26:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-23 15:26:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-23 15:26:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-23 15:26:16,174 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-23 15:26:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:16,175 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-23 15:26:16,175 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:26:16,175 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-23 15:26:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-23 15:26:16,176 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:16,176 INFO L353 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-23 15:26:16,176 INFO L414 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-23 15:26:16,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:17,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:17,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-23 15:26:17,884 INFO L450 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-23 15:26:17,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-23 15:26:17,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:26:17,888 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-23 15:26:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:19,656 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-23 15:26:19,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-23 15:26:19,657 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-23 15:26:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:19,657 INFO L225 Difference]: With dead ends: 383 [2018-07-23 15:26:19,657 INFO L226 Difference]: Without dead ends: 381 [2018-07-23 15:26:19,659 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:26:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-23 15:26:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-23 15:26:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-23 15:26:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-23 15:26:19,663 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-23 15:26:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:19,663 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-23 15:26:19,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-23 15:26:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-23 15:26:19,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-23 15:26:19,664 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:19,664 INFO L353 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-23 15:26:19,665 INFO L414 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:19,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-23 15:26:19,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:21,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:21,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-23 15:26:21,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-23 15:26:21,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-23 15:26:21,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:26:21,508 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-23 15:26:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:22,270 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-23 15:26:22,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:26:22,270 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-23 15:26:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:22,270 INFO L225 Difference]: With dead ends: 385 [2018-07-23 15:26:22,271 INFO L226 Difference]: Without dead ends: 383 [2018-07-23 15:26:22,273 INFO L573 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 [2018-07-23 15:26:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-23 15:26:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-23 15:26:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-23 15:26:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-23 15:26:22,276 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-23 15:26:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:22,277 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-23 15:26:22,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-23 15:26:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-23 15:26:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-23 15:26:22,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:22,278 INFO L353 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-23 15:26:22,278 INFO L414 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:22,278 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-23 15:26:22,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:24,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:24,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:26:24,179 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:26:24,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:26:24,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:26:24,182 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-23 15:26:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:24,870 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-23 15:26:24,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-23 15:26:24,870 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-23 15:26:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:24,870 INFO L225 Difference]: With dead ends: 387 [2018-07-23 15:26:24,871 INFO L226 Difference]: Without dead ends: 385 [2018-07-23 15:26:24,872 INFO L573 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 [2018-07-23 15:26:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-23 15:26:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-23 15:26:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-23 15:26:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-23 15:26:24,876 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-23 15:26:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:24,876 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-23 15:26:24,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:26:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-23 15:26:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-23 15:26:24,877 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:24,877 INFO L353 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-23 15:26:24,877 INFO L414 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-23 15:26:24,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:26,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:26,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:26:26,748 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:26:26,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:26:26,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:26:26,753 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-23 15:26:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:28,334 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-23 15:26:28,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:26:28,335 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-23 15:26:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:28,335 INFO L225 Difference]: With dead ends: 389 [2018-07-23 15:26:28,335 INFO L226 Difference]: Without dead ends: 387 [2018-07-23 15:26:28,337 INFO L573 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 [2018-07-23 15:26:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-23 15:26:28,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-23 15:26:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-23 15:26:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-23 15:26:28,341 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-23 15:26:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:28,342 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-23 15:26:28,342 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:26:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-23 15:26:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-23 15:26:28,344 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:28,344 INFO L353 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-23 15:26:28,344 INFO L414 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:28,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-23 15:26:28,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:30,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:30,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-23 15:26:30,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-23 15:26:30,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-23 15:26:30,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:26:30,217 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-23 15:26:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:32,073 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-23 15:26:32,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-23 15:26:32,073 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-23 15:26:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:32,074 INFO L225 Difference]: With dead ends: 391 [2018-07-23 15:26:32,074 INFO L226 Difference]: Without dead ends: 389 [2018-07-23 15:26:32,078 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:26:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-23 15:26:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-23 15:26:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-23 15:26:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-23 15:26:32,082 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-23 15:26:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:32,082 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-23 15:26:32,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-23 15:26:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-23 15:26:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-23 15:26:32,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:32,084 INFO L353 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-23 15:26:32,084 INFO L414 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-23 15:26:32,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:33,957 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:33,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-23 15:26:33,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-23 15:26:33,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-23 15:26:33,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:26:33,961 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-23 15:26:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:35,594 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-23 15:26:35,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:26:35,595 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-23 15:26:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:35,595 INFO L225 Difference]: With dead ends: 393 [2018-07-23 15:26:35,595 INFO L226 Difference]: Without dead ends: 391 [2018-07-23 15:26:35,597 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:26:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-23 15:26:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-23 15:26:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-23 15:26:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-23 15:26:35,601 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-23 15:26:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:35,601 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-23 15:26:35,601 INFO L472 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-23 15:26:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-23 15:26:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-23 15:26:35,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:35,602 INFO L353 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-23 15:26:35,602 INFO L414 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:35,603 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-23 15:26:35,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:37,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:37,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:26:37,555 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:26:37,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:26:37,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:26:37,560 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-23 15:26:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:38,781 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-23 15:26:38,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-23 15:26:38,781 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-23 15:26:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:38,782 INFO L225 Difference]: With dead ends: 395 [2018-07-23 15:26:38,782 INFO L226 Difference]: Without dead ends: 393 [2018-07-23 15:26:38,784 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:26:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-23 15:26:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-23 15:26:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-23 15:26:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-23 15:26:38,788 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-23 15:26:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:38,788 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-23 15:26:38,788 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:26:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-23 15:26:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-23 15:26:38,789 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:38,789 INFO L353 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-23 15:26:38,789 INFO L414 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:38,790 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-23 15:26:38,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:40,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:40,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:26:40,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:26:40,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:26:40,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:26:40,762 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-23 15:26:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:41,700 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-23 15:26:41,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:26:41,700 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-23 15:26:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:41,701 INFO L225 Difference]: With dead ends: 397 [2018-07-23 15:26:41,701 INFO L226 Difference]: Without dead ends: 395 [2018-07-23 15:26:41,703 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:26:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-23 15:26:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-23 15:26:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-23 15:26:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-23 15:26:41,707 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-23 15:26:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:41,707 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-23 15:26:41,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:26:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-23 15:26:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-23 15:26:41,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:41,709 INFO L353 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-23 15:26:41,709 INFO L414 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-23 15:26:41,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:43,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:43,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-23 15:26:43,804 INFO L450 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-23 15:26:43,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-23 15:26:43,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:26:43,808 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-23 15:26:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:44,553 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-23 15:26:44,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-23 15:26:44,553 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-23 15:26:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:44,554 INFO L225 Difference]: With dead ends: 399 [2018-07-23 15:26:44,554 INFO L226 Difference]: Without dead ends: 397 [2018-07-23 15:26:44,556 INFO L573 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 [2018-07-23 15:26:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-23 15:26:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-23 15:26:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-23 15:26:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-23 15:26:44,560 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-23 15:26:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:44,560 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-23 15:26:44,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-23 15:26:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-23 15:26:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-23 15:26:44,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:44,562 INFO L353 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-23 15:26:44,562 INFO L414 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:44,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-23 15:26:44,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:46,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:46,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-23 15:26:46,550 INFO L450 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-23 15:26:46,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-23 15:26:46,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:26:46,552 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-23 15:26:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:47,339 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-23 15:26:47,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:26:47,339 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-23 15:26:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:47,340 INFO L225 Difference]: With dead ends: 401 [2018-07-23 15:26:47,340 INFO L226 Difference]: Without dead ends: 399 [2018-07-23 15:26:47,341 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:26:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-23 15:26:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-23 15:26:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-23 15:26:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-23 15:26:47,345 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-23 15:26:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:47,345 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-23 15:26:47,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-23 15:26:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-23 15:26:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-23 15:26:47,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:47,347 INFO L353 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-23 15:26:47,347 INFO L414 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-23 15:26:47,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:49,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:49,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:26:49,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:26:49,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:26:49,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:26:49,350 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-23 15:26:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:50,192 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-23 15:26:50,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-23 15:26:50,193 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-23 15:26:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:50,193 INFO L225 Difference]: With dead ends: 403 [2018-07-23 15:26:50,193 INFO L226 Difference]: Without dead ends: 401 [2018-07-23 15:26:50,195 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:26:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-23 15:26:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-23 15:26:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-23 15:26:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-23 15:26:50,200 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-23 15:26:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:50,200 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-23 15:26:50,200 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:26:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-23 15:26:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-23 15:26:50,201 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:50,201 INFO L353 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-23 15:26:50,201 INFO L414 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-23 15:26:50,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:52,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:52,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:26:52,259 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:26:52,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:26:52,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:26:52,264 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-23 15:26:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:53,487 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-23 15:26:53,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:26:53,487 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-23 15:26:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:53,488 INFO L225 Difference]: With dead ends: 405 [2018-07-23 15:26:53,488 INFO L226 Difference]: Without dead ends: 403 [2018-07-23 15:26:53,490 INFO L573 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 [2018-07-23 15:26:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-23 15:26:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-23 15:26:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-23 15:26:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-23 15:26:53,494 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-23 15:26:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:53,494 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-23 15:26:53,494 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:26:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-23 15:26:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-23 15:26:53,495 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:53,495 INFO L353 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-23 15:26:53,495 INFO L414 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-23 15:26:53,496 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:55,571 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:55,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-23 15:26:55,571 INFO L450 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-23 15:26:55,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-23 15:26:55,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:26:55,576 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-23 15:26:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:57,200 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-23 15:26:57,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-23 15:26:57,200 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-23 15:26:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:57,201 INFO L225 Difference]: With dead ends: 407 [2018-07-23 15:26:57,201 INFO L226 Difference]: Without dead ends: 405 [2018-07-23 15:26:57,203 INFO L573 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 [2018-07-23 15:26:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-23 15:26:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-23 15:26:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-23 15:26:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-23 15:26:57,207 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-23 15:26:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:57,208 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-23 15:26:57,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-23 15:26:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-23 15:26:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-23 15:26:57,209 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:57,209 INFO L353 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-23 15:26:57,209 INFO L414 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-23 15:26:57,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:59,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:59,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-23 15:26:59,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-23 15:26:59,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-23 15:26:59,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:26:59,243 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-23 15:27:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:01,360 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-23 15:27:01,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:27:01,360 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-23 15:27:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:01,361 INFO L225 Difference]: With dead ends: 409 [2018-07-23 15:27:01,361 INFO L226 Difference]: Without dead ends: 407 [2018-07-23 15:27:01,363 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:27:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-23 15:27:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-23 15:27:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-23 15:27:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-23 15:27:01,367 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-23 15:27:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:01,367 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-23 15:27:01,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-23 15:27:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-23 15:27:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-23 15:27:01,369 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:01,369 INFO L353 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-23 15:27:01,370 INFO L414 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-23 15:27:01,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:03,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:03,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:27:03,481 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:27:03,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:27:03,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:27:03,484 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-23 15:27:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:05,395 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-23 15:27:05,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-23 15:27:05,395 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-23 15:27:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:05,396 INFO L225 Difference]: With dead ends: 411 [2018-07-23 15:27:05,396 INFO L226 Difference]: Without dead ends: 409 [2018-07-23 15:27:05,397 INFO L573 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 [2018-07-23 15:27:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-23 15:27:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-23 15:27:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-23 15:27:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-23 15:27:05,401 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-23 15:27:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:05,401 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-23 15:27:05,401 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:27:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-23 15:27:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-23 15:27:05,402 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:05,402 INFO L353 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-23 15:27:05,402 INFO L414 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:05,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-23 15:27:05,402 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:07,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:07,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:27:07,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:27:07,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:27:07,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:27:07,492 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-23 15:27:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:08,558 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-23 15:27:08,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:27:08,558 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-23 15:27:08,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:08,558 INFO L225 Difference]: With dead ends: 413 [2018-07-23 15:27:08,558 INFO L226 Difference]: Without dead ends: 411 [2018-07-23 15:27:08,560 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:27:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-23 15:27:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-23 15:27:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-23 15:27:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-23 15:27:08,563 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-23 15:27:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-23 15:27:08,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:27:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-23 15:27:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-23 15:27:08,564 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:08,565 INFO L353 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-23 15:27:08,565 INFO L414 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-23 15:27:08,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:10,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:10,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-23 15:27:10,696 INFO L450 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-23 15:27:10,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-23 15:27:10,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:27:10,701 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-23 15:27:11,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:11,614 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-23 15:27:11,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-23 15:27:11,614 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-23 15:27:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:11,615 INFO L225 Difference]: With dead ends: 415 [2018-07-23 15:27:11,615 INFO L226 Difference]: Without dead ends: 413 [2018-07-23 15:27:11,618 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:27:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-23 15:27:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-23 15:27:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-23 15:27:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-23 15:27:11,622 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-23 15:27:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:11,622 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-23 15:27:11,622 INFO L472 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-23 15:27:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-23 15:27:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-23 15:27:11,624 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:11,624 INFO L353 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-23 15:27:11,624 INFO L414 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:11,624 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-23 15:27:11,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:13,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:13,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-23 15:27:13,642 INFO L450 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-23 15:27:13,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-23 15:27:13,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:27:13,647 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-23 15:27:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:15,471 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-23 15:27:15,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:27:15,471 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-23 15:27:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:15,472 INFO L225 Difference]: With dead ends: 417 [2018-07-23 15:27:15,472 INFO L226 Difference]: Without dead ends: 415 [2018-07-23 15:27:15,474 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:27:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-23 15:27:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-23 15:27:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-23 15:27:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-23 15:27:15,479 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-23 15:27:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:15,480 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-23 15:27:15,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-23 15:27:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-23 15:27:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-23 15:27:15,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:15,481 INFO L353 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-23 15:27:15,481 INFO L414 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:15,481 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-23 15:27:15,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:17,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:17,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:27:17,783 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:27:17,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:27:17,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:27:17,788 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-23 15:27:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:19,907 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-23 15:27:19,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-23 15:27:19,907 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-23 15:27:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:19,908 INFO L225 Difference]: With dead ends: 419 [2018-07-23 15:27:19,908 INFO L226 Difference]: Without dead ends: 417 [2018-07-23 15:27:19,912 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:27:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-23 15:27:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-23 15:27:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-23 15:27:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-23 15:27:19,918 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-23 15:27:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:19,919 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-23 15:27:19,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:27:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-23 15:27:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-23 15:27:19,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:19,921 INFO L353 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-23 15:27:19,921 INFO L414 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:19,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-23 15:27:19,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:22,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:22,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:27:22,083 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:27:22,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:27:22,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:27:22,087 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-23 15:27:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:23,082 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-23 15:27:23,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:27:23,082 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-23 15:27:23,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:23,083 INFO L225 Difference]: With dead ends: 421 [2018-07-23 15:27:23,083 INFO L226 Difference]: Without dead ends: 419 [2018-07-23 15:27:23,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:27:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-23 15:27:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-23 15:27:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-23 15:27:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-23 15:27:23,089 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-23 15:27:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:23,089 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-23 15:27:23,089 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:27:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-23 15:27:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-23 15:27:23,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:23,091 INFO L353 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-23 15:27:23,091 INFO L414 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:23,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-23 15:27:23,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:25,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:25,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-23 15:27:25,286 INFO L450 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-23 15:27:25,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-23 15:27:25,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:27:25,289 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-23 15:27:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:27,359 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-23 15:27:27,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-23 15:27:27,359 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-23 15:27:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:27,360 INFO L225 Difference]: With dead ends: 423 [2018-07-23 15:27:27,360 INFO L226 Difference]: Without dead ends: 421 [2018-07-23 15:27:27,362 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:27:27,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-23 15:27:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-23 15:27:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-23 15:27:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-23 15:27:27,367 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-23 15:27:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:27,368 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-23 15:27:27,368 INFO L472 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-23 15:27:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-23 15:27:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-23 15:27:27,369 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:27,369 INFO L353 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-23 15:27:27,369 INFO L414 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-23 15:27:27,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:29,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:29,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-23 15:27:29,633 INFO L450 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-23 15:27:29,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-23 15:27:29,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:27:29,636 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-23 15:27:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:30,748 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-23 15:27:30,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:27:30,749 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-23 15:27:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:30,749 INFO L225 Difference]: With dead ends: 425 [2018-07-23 15:27:30,749 INFO L226 Difference]: Without dead ends: 423 [2018-07-23 15:27:30,750 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:27:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-23 15:27:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-23 15:27:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-23 15:27:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-23 15:27:30,754 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-23 15:27:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:30,754 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-23 15:27:30,755 INFO L472 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-23 15:27:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-23 15:27:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-23 15:27:30,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:30,756 INFO L353 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-23 15:27:30,756 INFO L414 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-23 15:27:30,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:33,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:33,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:27:33,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:27:33,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:27:33,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:27:33,074 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-23 15:27:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:34,605 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-23 15:27:34,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-23 15:27:34,605 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-23 15:27:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:34,606 INFO L225 Difference]: With dead ends: 427 [2018-07-23 15:27:34,606 INFO L226 Difference]: Without dead ends: 425 [2018-07-23 15:27:34,607 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:27:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-23 15:27:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-23 15:27:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-23 15:27:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-23 15:27:34,613 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-23 15:27:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:34,613 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-23 15:27:34,613 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:27:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-23 15:27:34,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-23 15:27:34,615 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:34,615 INFO L353 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-23 15:27:34,615 INFO L414 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-23 15:27:34,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:36,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:36,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:27:36,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:27:36,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:27:36,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:27:36,914 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-23 15:27:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:39,355 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-23 15:27:39,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:27:39,355 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-23 15:27:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:39,355 INFO L225 Difference]: With dead ends: 429 [2018-07-23 15:27:39,355 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:27:39,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:27:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:27:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-23 15:27:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-23 15:27:39,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-23 15:27:39,362 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-23 15:27:39,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:39,362 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-23 15:27:39,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:27:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-23 15:27:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-23 15:27:39,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:39,363 INFO L353 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-23 15:27:39,363 INFO L414 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-23 15:27:39,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:41,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:41,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-23 15:27:41,832 INFO L450 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-23 15:27:41,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-23 15:27:41,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:27:41,838 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-23 15:27:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:43,522 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-23 15:27:43,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-23 15:27:43,522 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-23 15:27:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:43,523 INFO L225 Difference]: With dead ends: 431 [2018-07-23 15:27:43,523 INFO L226 Difference]: Without dead ends: 429 [2018-07-23 15:27:43,527 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:27:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-23 15:27:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-23 15:27:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-23 15:27:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-23 15:27:43,532 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-23 15:27:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:43,532 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-23 15:27:43,532 INFO L472 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-23 15:27:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-23 15:27:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-23 15:27:43,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:43,534 INFO L353 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-23 15:27:43,534 INFO L414 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-23 15:27:43,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Received shutdown request... [2018-07-23 15:27:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:44,629 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:262) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:204) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:406) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-23 15:27:44,633 INFO L168 Benchmark]: Toolchain (without parser) took 250253.55 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -785.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:27:44,635 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:27:44,635 INFO L168 Benchmark]: Boogie Preprocessor took 50.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:27:44,636 INFO L168 Benchmark]: RCFGBuilder took 224.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:27:44,636 INFO L168 Benchmark]: TraceAbstraction took 249974.49 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -795.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:27:44,638 INFO L336 ainManager$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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 224.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249974.49 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -795.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-27-44-648.csv Completed graceful shutdown