java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:30:54,989 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:30:54,991 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:30:55,006 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:30:55,007 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:30:55,008 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:30:55,009 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:30:55,011 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:30:55,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:30:55,014 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:30:55,015 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:30:55,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:30:55,016 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:30:55,017 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:30:55,018 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:30:55,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:30:55,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:30:55,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:30:55,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:30:55,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:30:55,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:30:55,027 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:30:55,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:30:55,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:30:55,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:30:55,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:30:55,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:30:55,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:30:55,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:30:55,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:30:55,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:30:55,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:30:55,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:30:55,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:30:55,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:30:55,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:30:55,048 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:30:55,049 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:30:55,049 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:30:55,049 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:30:55,049 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:30:55,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:30:55,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:30:55,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:30:55,110 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:30:55,111 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:30:55,112 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl [2018-07-25 13:30:55,112 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl' [2018-07-25 13:30:55,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:30:55,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:30:55,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:30:55,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:30:55,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:30:55,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,200 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:30:55,201 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:30:55,201 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:30:55,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:30:55,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:30:55,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:30:55,205 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:30:55,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:30:55,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:30:55,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:30:55,227 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:30:55,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/1) ... [2018-07-25 13:30:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 13:30:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 13:30:55,451 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:30:55,452 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:30:55 BoogieIcfgContainer [2018-07-25 13:30:55,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:30:55,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:30:55,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:30:55,457 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:30:55,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:55" (1/2) ... [2018-07-25 13:30:55,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a94b3f2 and model type LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:30:55, skipping insertion in model container [2018-07-25 13:30:55,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:30:55" (2/2) ... [2018-07-25 13:30:55,462 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-Reduced.bpl [2018-07-25 13:30:55,473 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:30:55,482 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:30:55,532 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:30:55,534 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:30:55,534 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:30:55,534 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:30:55,534 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:30:55,534 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:30:55,535 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:30:55,535 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:30:55,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:30:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:30:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:30:55,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,562 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:30:55,563 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 13:30:55,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:55,645 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:30:55,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 13:30:55,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:30:55,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:30:55,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:30:55,666 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 13:30:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,700 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:30:55,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:30:55,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 13:30:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,713 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:30:55,714 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 13:30:55,717 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:30:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 13:30:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 13:30:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 13:30:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 13:30:55,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 13:30:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,761 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 13:30:55,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:30:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 13:30:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:30:55,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,762 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 13:30:55,763 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 13:30:55,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:55,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 13:30:55,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:30:55,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:30:55,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:30:55,793 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 13:30:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,822 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:30:55,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:30:55,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 13:30:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,826 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:30:55,826 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:30:55,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:30:55,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:30:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 13:30:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 13:30:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 13:30:55,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 13:30:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,836 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 13:30:55,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:30:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 13:30:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:30:55,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,837 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 13:30:55,838 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 13:30:55,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:55,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:30:55,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:30:55,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:30:55,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:30:55,901 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 13:30:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,938 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:30:55,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:30:55,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 13:30:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,939 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:30:55,939 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:30:55,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:30:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:30:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:30:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:30:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 13:30:55,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 13:30:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,945 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 13:30:55,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:30:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 13:30:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:30:55,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,946 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 13:30:55,946 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,947 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 13:30:55,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:55,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:30:55,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:30:55,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:30:55,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:30:55,992 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 13:30:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,013 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:30:56,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:30:56,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 13:30:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,015 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:30:56,015 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:30:56,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:30:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:30:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 13:30:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:30:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 13:30:56,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 13:30:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,021 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 13:30:56,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:30:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 13:30:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:30:56,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,022 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 13:30:56,022 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,023 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 13:30:56,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:30:56,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:30:56,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:30:56,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:30:56,101 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 13:30:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,151 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:30:56,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:30:56,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 13:30:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,158 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:30:56,158 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:30:56,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:30:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:30:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 13:30:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 13:30:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 13:30:56,165 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 13:30:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,166 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 13:30:56,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:30:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 13:30:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:30:56,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,167 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 13:30:56,167 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 13:30:56,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,213 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,213 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:30:56,214 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:30:56,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:30:56,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:30:56,215 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 13:30:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,245 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:30:56,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:30:56,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 13:30:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,246 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:30:56,246 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:30:56,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:30:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:30:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:30:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:30:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 13:30:56,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 13:30:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,252 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 13:30:56,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:30:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 13:30:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:30:56,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,254 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 13:30:56,254 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,254 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 13:30:56,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:30:56,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:30:56,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:30:56,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:30:56,300 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 13:30:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,323 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:30:56,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:30:56,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 13:30:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,324 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:30:56,324 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:30:56,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:30:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:30:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 13:30:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:30:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 13:30:56,330 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 13:30:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,331 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 13:30:56,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:30:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 13:30:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:30:56,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,332 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 13:30:56,332 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 13:30:56,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:30:56,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:30:56,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:30:56,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:30:56,417 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 13:30:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,471 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 13:30:56,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:30:56,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 13:30:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,473 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:30:56,473 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 13:30:56,475 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:30:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 13:30:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 13:30:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 13:30:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 13:30:56,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 13:30:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,487 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 13:30:56,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:30:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 13:30:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 13:30:56,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,493 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 13:30:56,494 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 13:30:56,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:30:56,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:30:56,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:30:56,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:30:56,555 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 13:30:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,586 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 13:30:56,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:30:56,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 13:30:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,588 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:30:56,588 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:30:56,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:30:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:30:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 13:30:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:30:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 13:30:56,598 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 13:30:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,598 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 13:30:56,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:30:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 13:30:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:30:56,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,599 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 13:30:56,600 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 13:30:56,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:30:56,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:30:56,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:30:56,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:30:56,666 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 13:30:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,692 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 13:30:56,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:30:56,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 13:30:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,694 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:30:56,694 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 13:30:56,694 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:30:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 13:30:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 13:30:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 13:30:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 13:30:56,701 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 13:30:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,701 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 13:30:56,701 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:30:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 13:30:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 13:30:56,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,703 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 13:30:56,703 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 13:30:56,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:30:56,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:30:56,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:30:56,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:30:56,782 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 13:30:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,821 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 13:30:56,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:30:56,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 13:30:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,826 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:30:56,827 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 13:30:56,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:30:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 13:30:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 13:30:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 13:30:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 13:30:56,845 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 13:30:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,845 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 13:30:56,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:30:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 13:30:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:30:56,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,848 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 13:30:56,848 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 13:30:56,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:30:56,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:30:56,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:30:56,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:30:56,928 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 13:30:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,955 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 13:30:56,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:30:56,955 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 13:30:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,956 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:30:56,956 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:30:56,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:30:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:30:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 13:30:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 13:30:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 13:30:56,963 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 13:30:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,964 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 13:30:56,964 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:30:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 13:30:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 13:30:56,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,965 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 13:30:56,966 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 13:30:56,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:30:57,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:30:57,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:30:57,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:30:57,043 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 13:30:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,084 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 13:30:57,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:30:57,084 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 13:30:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,085 INFO L225 Difference]: With dead ends: 31 [2018-07-25 13:30:57,085 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 13:30:57,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:30:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 13:30:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 13:30:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 13:30:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 13:30:57,098 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 13:30:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,099 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 13:30:57,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:30:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 13:30:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:30:57,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,100 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 13:30:57,101 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 13:30:57,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:30:57,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:30:57,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:30:57,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:30:57,180 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 13:30:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,205 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 13:30:57,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:30:57,208 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 13:30:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,209 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:30:57,209 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 13:30:57,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:30:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 13:30:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 13:30:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 13:30:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 13:30:57,216 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 13:30:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,216 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 13:30:57,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:30:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 13:30:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 13:30:57,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,218 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 13:30:57,218 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 13:30:57,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:30:57,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:30:57,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:30:57,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:30:57,297 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 13:30:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,334 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 13:30:57,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:30:57,335 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 13:30:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,338 INFO L225 Difference]: With dead ends: 35 [2018-07-25 13:30:57,338 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:30:57,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:30:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:30:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 13:30:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 13:30:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 13:30:57,348 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 13:30:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,348 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 13:30:57,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:30:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 13:30:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 13:30:57,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,350 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 13:30:57,350 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,353 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 13:30:57,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:30:57,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:30:57,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:30:57,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:30:57,442 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 13:30:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,464 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 13:30:57,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:30:57,466 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 13:30:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,467 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:30:57,467 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 13:30:57,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:30:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 13:30:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 13:30:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 13:30:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 13:30:57,479 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 13:30:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,479 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 13:30:57,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:30:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 13:30:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 13:30:57,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,481 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 13:30:57,481 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,481 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 13:30:57,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:30:57,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:30:57,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:30:57,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:30:57,569 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 13:30:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,598 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 13:30:57,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:30:57,599 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 13:30:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,600 INFO L225 Difference]: With dead ends: 39 [2018-07-25 13:30:57,600 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 13:30:57,600 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:30:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 13:30:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 13:30:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 13:30:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 13:30:57,606 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 13:30:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,606 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 13:30:57,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:30:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 13:30:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 13:30:57,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,607 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 13:30:57,608 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 13:30:57,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:30:57,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:30:57,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:30:57,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:30:57,703 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 13:30:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,744 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 13:30:57,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:30:57,744 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 13:30:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,752 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:30:57,752 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:30:57,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:30:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:30:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 13:30:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 13:30:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 13:30:57,763 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 13:30:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,763 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 13:30:57,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:30:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 13:30:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 13:30:57,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,766 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 13:30:57,766 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 13:30:57,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:30:57,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:30:57,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:30:57,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:30:57,891 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 13:30:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,919 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 13:30:57,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:30:57,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 13:30:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,921 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:30:57,921 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:30:57,921 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:30:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:30:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 13:30:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 13:30:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 13:30:57,928 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 13:30:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,929 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 13:30:57,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:30:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 13:30:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 13:30:57,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,930 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 13:30:57,930 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 13:30:57,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:30:58,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:30:58,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:30:58,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:30:58,044 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 13:30:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,076 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 13:30:58,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:30:58,077 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 13:30:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,078 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:30:58,079 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 13:30:58,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:30:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 13:30:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 13:30:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 13:30:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 13:30:58,088 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 13:30:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,089 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 13:30:58,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:30:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 13:30:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 13:30:58,090 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,090 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 13:30:58,092 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 13:30:58,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:30:58,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:30:58,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:30:58,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:30:58,213 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 13:30:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,244 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 13:30:58,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:30:58,244 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 13:30:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,245 INFO L225 Difference]: With dead ends: 47 [2018-07-25 13:30:58,245 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:30:58,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:30:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:30:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 13:30:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 13:30:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 13:30:58,261 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 13:30:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,261 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 13:30:58,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:30:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 13:30:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 13:30:58,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,268 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 13:30:58,268 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 13:30:58,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:30:58,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:30:58,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:30:58,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:30:58,395 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 13:30:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,425 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 13:30:58,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:30:58,425 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 13:30:58,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,426 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:30:58,430 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 13:30:58,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:30:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 13:30:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 13:30:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 13:30:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 13:30:58,436 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 13:30:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,436 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 13:30:58,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:30:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 13:30:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 13:30:58,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,437 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 13:30:58,438 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 13:30:58,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:30:58,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:30:58,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:30:58,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:30:58,570 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 13:30:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,598 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 13:30:58,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:30:58,599 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 13:30:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,599 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:30:58,599 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 13:30:58,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:30:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 13:30:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 13:30:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 13:30:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 13:30:58,612 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 13:30:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,613 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 13:30:58,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:30:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 13:30:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 13:30:58,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,614 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 13:30:58,614 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 13:30:58,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:30:58,745 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:30:58,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:30:58,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:30:58,746 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 13:30:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,771 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 13:30:58,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:30:58,771 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 13:30:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,772 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:30:58,772 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:30:58,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:30:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:30:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 13:30:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 13:30:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 13:30:58,779 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 13:30:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,779 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 13:30:58,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:30:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 13:30:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 13:30:58,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,780 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 13:30:58,781 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 13:30:58,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:30:58,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:30:58,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:30:58,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:30:58,913 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 13:30:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,940 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 13:30:58,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:30:58,941 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 13:30:58,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,941 INFO L225 Difference]: With dead ends: 55 [2018-07-25 13:30:58,941 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 13:30:58,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:30:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 13:30:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 13:30:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 13:30:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 13:30:58,947 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 13:30:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,947 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 13:30:58,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:30:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 13:30:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 13:30:58,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,948 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 13:30:58,949 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 13:30:58,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:59,087 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:30:59,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:30:59,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:30:59,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:30:59,089 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 13:30:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,118 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 13:30:59,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:30:59,118 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 13:30:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,119 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:30:59,119 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 13:30:59,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:30:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 13:30:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 13:30:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 13:30:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 13:30:59,125 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 13:30:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,125 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 13:30:59,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:30:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 13:30:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 13:30:59,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,126 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 13:30:59,127 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 13:30:59,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:59,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:30:59,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:30:59,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:30:59,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:30:59,285 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 13:30:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,313 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 13:30:59,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:30:59,313 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 13:30:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,314 INFO L225 Difference]: With dead ends: 59 [2018-07-25 13:30:59,314 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:30:59,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:30:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:30:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 13:30:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 13:30:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 13:30:59,319 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 13:30:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,320 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 13:30:59,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:30:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 13:30:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 13:30:59,321 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,321 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 13:30:59,321 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 13:30:59,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:59,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:30:59,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:30:59,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:30:59,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:30:59,538 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 13:30:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,572 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 13:30:59,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:30:59,572 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 13:30:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,573 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:30:59,573 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 13:30:59,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:30:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 13:30:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 13:30:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 13:30:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 13:30:59,579 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 13:30:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,579 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 13:30:59,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:30:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 13:30:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 13:30:59,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,580 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 13:30:59,580 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 13:30:59,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:59,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:30:59,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:30:59,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:30:59,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:30:59,747 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 13:30:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,782 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 13:30:59,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:30:59,782 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 13:30:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,783 INFO L225 Difference]: With dead ends: 63 [2018-07-25 13:30:59,783 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 13:30:59,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:30:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 13:30:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 13:30:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 13:30:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 13:30:59,790 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 13:30:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,790 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 13:30:59,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:30:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 13:30:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 13:30:59,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,791 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 13:30:59,791 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 13:30:59,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:59,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:30:59,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:30:59,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:30:59,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:30:59,953 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 13:30:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,988 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 13:30:59,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:30:59,988 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 13:30:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,989 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:30:59,989 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:30:59,990 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:30:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:30:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 13:30:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 13:30:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 13:30:59,994 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 13:30:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,995 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 13:30:59,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:30:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 13:30:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 13:30:59,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,996 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 13:30:59,996 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 13:30:59,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:00,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:31:00,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:31:00,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:31:00,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:31:00,175 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 13:31:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,210 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 13:31:00,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:31:00,210 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 13:31:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,212 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:31:00,212 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 13:31:00,213 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:31:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 13:31:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 13:31:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 13:31:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 13:31:00,218 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 13:31:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,219 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 13:31:00,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:31:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 13:31:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 13:31:00,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,220 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 13:31:00,220 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 13:31:00,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:00,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:31:00,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:31:00,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:31:00,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:31:00,415 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 13:31:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,446 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 13:31:00,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:31:00,447 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 13:31:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,447 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:31:00,447 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 13:31:00,448 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:31:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 13:31:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 13:31:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 13:31:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 13:31:00,455 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 13:31:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,456 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 13:31:00,456 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:31:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 13:31:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 13:31:00,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,457 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 13:31:00,458 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,458 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 13:31:00,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:00,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:31:00,637 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:31:00,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:31:00,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:31:00,640 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 13:31:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,675 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 13:31:00,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:31:00,675 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 13:31:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,676 INFO L225 Difference]: With dead ends: 71 [2018-07-25 13:31:00,676 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:31:00,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:31:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:31:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 13:31:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 13:31:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 13:31:00,681 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 13:31:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,682 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 13:31:00,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:31:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 13:31:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 13:31:00,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,683 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 13:31:00,683 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 13:31:00,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:00,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:31:00,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:31:00,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:31:00,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:31:00,857 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 13:31:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,897 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 13:31:00,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:31:00,897 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 13:31:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,898 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:31:00,898 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 13:31:00,899 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:31:00,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 13:31:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 13:31:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 13:31:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 13:31:00,904 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 13:31:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,904 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 13:31:00,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:31:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 13:31:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 13:31:00,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,905 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 13:31:00,907 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 13:31:00,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:01,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:31:01,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:31:01,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:31:01,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:31:01,099 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 13:31:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,136 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 13:31:01,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:31:01,136 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 13:31:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,137 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:31:01,137 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 13:31:01,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:31:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 13:31:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 13:31:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 13:31:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 13:31:01,142 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 13:31:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,142 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 13:31:01,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:31:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 13:31:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 13:31:01,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,143 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 13:31:01,144 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,144 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 13:31:01,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:01,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:31:01,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:31:01,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:31:01,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:31:01,344 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 13:31:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,378 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 13:31:01,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:31:01,378 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 13:31:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,379 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:31:01,379 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:31:01,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:31:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:31:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 13:31:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 13:31:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 13:31:01,384 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 13:31:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,384 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 13:31:01,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:31:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 13:31:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 13:31:01,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,385 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 13:31:01,386 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 13:31:01,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:01,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:31:01,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:31:01,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:31:01,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:31:01,578 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 13:31:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,620 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 13:31:01,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:31:01,620 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 13:31:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,621 INFO L225 Difference]: With dead ends: 79 [2018-07-25 13:31:01,621 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 13:31:01,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:31:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 13:31:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 13:31:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 13:31:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 13:31:01,627 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 13:31:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,627 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 13:31:01,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:31:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 13:31:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 13:31:01,629 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,629 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 13:31:01,629 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 13:31:01,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:01,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:31:01,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:31:01,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:31:01,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:31:01,866 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 13:31:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,904 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 13:31:01,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:31:01,904 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 13:31:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,905 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:31:01,906 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 13:31:01,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:31:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 13:31:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 13:31:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 13:31:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 13:31:01,912 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 13:31:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,913 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 13:31:01,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:31:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 13:31:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 13:31:01,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,914 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 13:31:01,914 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 13:31:01,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:02,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:31:02,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:31:02,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:31:02,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:31:02,181 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 13:31:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,227 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 13:31:02,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:31:02,228 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 13:31:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,229 INFO L225 Difference]: With dead ends: 83 [2018-07-25 13:31:02,229 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:31:02,230 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:31:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:31:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 13:31:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 13:31:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 13:31:02,236 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 13:31:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,237 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 13:31:02,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:31:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 13:31:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 13:31:02,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,238 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 13:31:02,238 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 13:31:02,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:02,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:31:02,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:31:02,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:31:02,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:31:02,423 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 13:31:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,465 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 13:31:02,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:31:02,465 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 13:31:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,466 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:31:02,466 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 13:31:02,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:31:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 13:31:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 13:31:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 13:31:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 13:31:02,471 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 13:31:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,472 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 13:31:02,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:31:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 13:31:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 13:31:02,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,473 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 13:31:02,473 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 13:31:02,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:02,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:31:02,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:31:02,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:31:02,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:31:02,664 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 13:31:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,706 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 13:31:02,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:31:02,706 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 13:31:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,707 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:31:02,707 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 13:31:02,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:31:02,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 13:31:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 13:31:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 13:31:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 13:31:02,715 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 13:31:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,715 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 13:31:02,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:31:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 13:31:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 13:31:02,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,716 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 13:31:02,717 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 13:31:02,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:02,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:31:02,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:31:02,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:31:02,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:31:02,918 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 13:31:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,965 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 13:31:02,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:31:02,965 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 13:31:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,966 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:31:02,966 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:31:02,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:31:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:31:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 13:31:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 13:31:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 13:31:02,974 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 13:31:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,974 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 13:31:02,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:31:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 13:31:02,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 13:31:02,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,975 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 13:31:02,976 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,976 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 13:31:02,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:03,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:31:03,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:31:03,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:31:03,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:31:03,191 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 13:31:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,243 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 13:31:03,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:31:03,244 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 13:31:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,245 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:31:03,245 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 13:31:03,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:31:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 13:31:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 13:31:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 13:31:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 13:31:03,259 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 13:31:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,260 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 13:31:03,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:31:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 13:31:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 13:31:03,261 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,261 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 13:31:03,261 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 13:31:03,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:03,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:31:03,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:31:03,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:31:03,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:31:03,473 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 13:31:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,515 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 13:31:03,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:31:03,515 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 13:31:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,516 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:31:03,516 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 13:31:03,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:31:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 13:31:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 13:31:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 13:31:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 13:31:03,523 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 13:31:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,524 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 13:31:03,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:31:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 13:31:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 13:31:03,525 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,525 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 13:31:03,525 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,525 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 13:31:03,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:03,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:31:03,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:31:03,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:31:03,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:31:03,744 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 13:31:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,798 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 13:31:03,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:31:03,798 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 13:31:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,799 INFO L225 Difference]: With dead ends: 95 [2018-07-25 13:31:03,800 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:31:03,800 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:31:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:31:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 13:31:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 13:31:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 13:31:03,813 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 13:31:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,813 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 13:31:03,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:31:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 13:31:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 13:31:03,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,815 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 13:31:03,815 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 13:31:03,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:04,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:31:04,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:31:04,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:31:04,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:31:04,070 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 13:31:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,123 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 13:31:04,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:31:04,124 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 13:31:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,125 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:31:04,125 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 13:31:04,126 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:31:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 13:31:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 13:31:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 13:31:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 13:31:04,131 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 13:31:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,131 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 13:31:04,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:31:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 13:31:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 13:31:04,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,133 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 13:31:04,133 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 13:31:04,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:04,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:31:04,388 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:31:04,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:31:04,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:31:04,390 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 13:31:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,437 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 13:31:04,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:31:04,438 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 13:31:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,439 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:31:04,439 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 13:31:04,440 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:31:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 13:31:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 13:31:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 13:31:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 13:31:04,446 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 13:31:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,446 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 13:31:04,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:31:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 13:31:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 13:31:04,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,448 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 13:31:04,448 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 13:31:04,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:04,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:31:04,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:31:04,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:31:04,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:31:04,751 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 13:31:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,801 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 13:31:04,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:31:04,801 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 13:31:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,803 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:31:04,803 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:31:04,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:31:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:31:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 13:31:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 13:31:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 13:31:04,812 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 13:31:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,813 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 13:31:04,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:31:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 13:31:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 13:31:04,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,814 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 13:31:04,814 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 13:31:04,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:05,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:31:05,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:31:05,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:31:05,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:31:05,129 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 13:31:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,178 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 13:31:05,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:31:05,178 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 13:31:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,179 INFO L225 Difference]: With dead ends: 103 [2018-07-25 13:31:05,179 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 13:31:05,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:31:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 13:31:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 13:31:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 13:31:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 13:31:05,186 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 13:31:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,187 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 13:31:05,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:31:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 13:31:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 13:31:05,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,188 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 13:31:05,189 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 13:31:05,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:05,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:31:05,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:31:05,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:31:05,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:31:05,433 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 13:31:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,486 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 13:31:05,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:31:05,487 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 13:31:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,488 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:31:05,488 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 13:31:05,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:31:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 13:31:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 13:31:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 13:31:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 13:31:05,495 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 13:31:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,495 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 13:31:05,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:31:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 13:31:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 13:31:05,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,497 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 13:31:05,497 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,498 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 13:31:05,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:05,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:31:05,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:31:05,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:31:05,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:31:05,745 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 13:31:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,805 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 13:31:05,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:31:05,805 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 13:31:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,806 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:31:05,807 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:31:05,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:31:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:31:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 13:31:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 13:31:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 13:31:05,817 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 13:31:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,818 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 13:31:05,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:31:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 13:31:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 13:31:05,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,819 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 13:31:05,819 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 13:31:05,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:06,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:31:06,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:31:06,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:31:06,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:31:06,087 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 13:31:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,146 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 13:31:06,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:31:06,147 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 13:31:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,148 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:31:06,148 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 13:31:06,150 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:31:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 13:31:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 13:31:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 13:31:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 13:31:06,157 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 13:31:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,157 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 13:31:06,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:31:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 13:31:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 13:31:06,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,159 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 13:31:06,159 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 13:31:06,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:06,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:31:06,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:31:06,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:31:06,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:31:06,455 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 13:31:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,521 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 13:31:06,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:31:06,521 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 13:31:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,522 INFO L225 Difference]: With dead ends: 111 [2018-07-25 13:31:06,522 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 13:31:06,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:31:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 13:31:06,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 13:31:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 13:31:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 13:31:06,529 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 13:31:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,529 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 13:31:06,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:31:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 13:31:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 13:31:06,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,533 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 13:31:06,534 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 13:31:06,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:06,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:31:06,813 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:31:06,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:31:06,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:31:06,815 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 13:31:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,887 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 13:31:06,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:31:06,887 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 13:31:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,888 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:31:06,888 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:31:06,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:31:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:31:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 13:31:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 13:31:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 13:31:06,896 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 13:31:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,896 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 13:31:06,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:31:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 13:31:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 13:31:06,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,898 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 13:31:06,898 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 13:31:06,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:07,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:31:07,176 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:31:07,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:31:07,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:31:07,178 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 13:31:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,249 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 13:31:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:31:07,249 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 13:31:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,250 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:31:07,250 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 13:31:07,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:31:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 13:31:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 13:31:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 13:31:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 13:31:07,259 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 13:31:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,259 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 13:31:07,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:31:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 13:31:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 13:31:07,261 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,261 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 13:31:07,261 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 13:31:07,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:07,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:31:07,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:31:07,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:31:07,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:31:07,595 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 13:31:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,672 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 13:31:07,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:31:07,672 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 13:31:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,673 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:31:07,674 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 13:31:07,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:31:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 13:31:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 13:31:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 13:31:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 13:31:07,681 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 13:31:07,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,682 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 13:31:07,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:31:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 13:31:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 13:31:07,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,684 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 13:31:07,684 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 13:31:07,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:08,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:31:08,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:31:08,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:31:08,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:31:08,032 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 13:31:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,117 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 13:31:08,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:31:08,117 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 13:31:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,118 INFO L225 Difference]: With dead ends: 119 [2018-07-25 13:31:08,119 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:31:08,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:31:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:31:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 13:31:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 13:31:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 13:31:08,126 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 13:31:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,126 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 13:31:08,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:31:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 13:31:08,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 13:31:08,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,128 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 13:31:08,128 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 13:31:08,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:08,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:31:08,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:31:08,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:31:08,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:31:08,419 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 13:31:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,493 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 13:31:08,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:31:08,494 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 13:31:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,495 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:31:08,495 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 13:31:08,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:31:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 13:31:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 13:31:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 13:31:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 13:31:08,504 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 13:31:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,504 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 13:31:08,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:31:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 13:31:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 13:31:08,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,506 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 13:31:08,506 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 13:31:08,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:08,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:31:08,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:31:08,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:31:08,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:31:08,814 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 13:31:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,901 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 13:31:08,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:31:08,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 13:31:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,902 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:31:08,902 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 13:31:08,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:31:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 13:31:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 13:31:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 13:31:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 13:31:08,912 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 13:31:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,912 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 13:31:08,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:31:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 13:31:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 13:31:08,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,914 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 13:31:08,915 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,915 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 13:31:08,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:09,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:31:09,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:31:09,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:31:09,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:31:09,221 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 13:31:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,280 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 13:31:09,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:31:09,280 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 13:31:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,281 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:31:09,282 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:31:09,283 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:31:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:31:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 13:31:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 13:31:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 13:31:09,290 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 13:31:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,290 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 13:31:09,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:31:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 13:31:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 13:31:09,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,292 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 13:31:09,292 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 13:31:09,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:09,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:31:09,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:31:09,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:31:09,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:31:09,594 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 13:31:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,670 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 13:31:09,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:31:09,670 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 13:31:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,671 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:31:09,672 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 13:31:09,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:31:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 13:31:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 13:31:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 13:31:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 13:31:09,678 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 13:31:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,679 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 13:31:09,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:31:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 13:31:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 13:31:09,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,680 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 13:31:09,681 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,681 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 13:31:09,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:09,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:31:09,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:31:09,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:31:09,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:31:09,997 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 13:31:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,061 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 13:31:10,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:31:10,062 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 13:31:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,063 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:31:10,063 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 13:31:10,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:31:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 13:31:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 13:31:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 13:31:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 13:31:10,070 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 13:31:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,070 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 13:31:10,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:31:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 13:31:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 13:31:10,072 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,072 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 13:31:10,072 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 13:31:10,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:10,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:31:10,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:31:10,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:31:10,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:31:10,426 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 13:31:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,526 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 13:31:10,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:31:10,526 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 13:31:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,527 INFO L225 Difference]: With dead ends: 131 [2018-07-25 13:31:10,528 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:31:10,528 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:31:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:31:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 13:31:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 13:31:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 13:31:10,535 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 13:31:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,535 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 13:31:10,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:31:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 13:31:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 13:31:10,537 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,537 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 13:31:10,537 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 13:31:10,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:10,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:31:10,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:31:10,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:31:10,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:31:10,813 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 13:31:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,874 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 13:31:10,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:31:10,874 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 13:31:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,875 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:31:10,875 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 13:31:10,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:31:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 13:31:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 13:31:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 13:31:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 13:31:10,882 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 13:31:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,883 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 13:31:10,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:31:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 13:31:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 13:31:10,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,884 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 13:31:10,885 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 13:31:10,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:11,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:31:11,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:31:11,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:31:11,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:31:11,170 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 13:31:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:11,254 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 13:31:11,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:31:11,254 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 13:31:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:11,255 INFO L225 Difference]: With dead ends: 135 [2018-07-25 13:31:11,255 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 13:31:11,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:31:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 13:31:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 13:31:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 13:31:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 13:31:11,262 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 13:31:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:11,263 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 13:31:11,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:31:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 13:31:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 13:31:11,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:11,264 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 13:31:11,265 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:11,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 13:31:11,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:11,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:31:11,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:31:11,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:31:11,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:31:11,550 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 13:31:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:11,639 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 13:31:11,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:31:11,640 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 13:31:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:11,641 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:31:11,641 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:31:11,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:31:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:31:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 13:31:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 13:31:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 13:31:11,648 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 13:31:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:11,650 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 13:31:11,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:31:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 13:31:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 13:31:11,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:11,652 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 13:31:11,652 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:11,652 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 13:31:11,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:11,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:31:11,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:31:11,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:31:11,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:31:11,947 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 13:31:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,024 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 13:31:12,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:31:12,024 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 13:31:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,025 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:31:12,025 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 13:31:12,026 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:31:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 13:31:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 13:31:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 13:31:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 13:31:12,033 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 13:31:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,033 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 13:31:12,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:31:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 13:31:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 13:31:12,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,035 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 13:31:12,035 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,035 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 13:31:12,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:12,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:31:12,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:31:12,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:31:12,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:31:12,340 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 13:31:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,403 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 13:31:12,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:31:12,403 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 13:31:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,404 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:31:12,404 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 13:31:12,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:31:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 13:31:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 13:31:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 13:31:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 13:31:12,411 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 13:31:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,411 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 13:31:12,411 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:31:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 13:31:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 13:31:12,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,413 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 13:31:12,413 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 13:31:12,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:12,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:31:12,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:31:12,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:31:12,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:31:12,785 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 13:31:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,849 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 13:31:12,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:31:12,850 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 13:31:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,851 INFO L225 Difference]: With dead ends: 143 [2018-07-25 13:31:12,851 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:31:12,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:31:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:31:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 13:31:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 13:31:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 13:31:12,860 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 13:31:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,860 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 13:31:12,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:31:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 13:31:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 13:31:12,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,862 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 13:31:12,862 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 13:31:12,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:13,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:31:13,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:31:13,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:31:13,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:31:13,240 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 13:31:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:13,297 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 13:31:13,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:31:13,298 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 13:31:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:13,299 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:31:13,299 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 13:31:13,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:31:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 13:31:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 13:31:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 13:31:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 13:31:13,305 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 13:31:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,306 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 13:31:13,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:31:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 13:31:13,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 13:31:13,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,307 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 13:31:13,307 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 13:31:13,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:13,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:31:13,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:31:13,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:31:13,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:31:13,618 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 13:31:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:13,688 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 13:31:13,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:31:13,688 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 13:31:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:13,689 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:31:13,689 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 13:31:13,690 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:31:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 13:31:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 13:31:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 13:31:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 13:31:13,695 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 13:31:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,696 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 13:31:13,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:31:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 13:31:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 13:31:13,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,697 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 13:31:13,697 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 13:31:13,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:13,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:31:13,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:31:13,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:31:13,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:31:13,979 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 13:31:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,080 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 13:31:14,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:31:14,080 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 13:31:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,082 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:31:14,082 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:31:14,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:31:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:31:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 13:31:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 13:31:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 13:31:14,088 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 13:31:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:14,088 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 13:31:14,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:31:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 13:31:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 13:31:14,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:14,090 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 13:31:14,090 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 13:31:14,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:14,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:14,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:31:14,362 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:31:14,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:31:14,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:31:14,363 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 13:31:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,476 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 13:31:14,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:31:14,476 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 13:31:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,477 INFO L225 Difference]: With dead ends: 151 [2018-07-25 13:31:14,478 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 13:31:14,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:31:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 13:31:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 13:31:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 13:31:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 13:31:14,483 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 13:31:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:14,483 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 13:31:14,484 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:31:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 13:31:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 13:31:14,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:14,485 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 13:31:14,485 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 13:31:14,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:14,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:14,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:31:14,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:31:14,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:31:14,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:31:14,773 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 13:31:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,878 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 13:31:14,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:31:14,878 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 13:31:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,880 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:31:14,880 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 13:31:14,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:31:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 13:31:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 13:31:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 13:31:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 13:31:14,886 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 13:31:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:14,887 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 13:31:14,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:31:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 13:31:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 13:31:14,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:14,888 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 13:31:14,888 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:14,888 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 13:31:14,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:15,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:15,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:31:15,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:31:15,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:31:15,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:31:15,238 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 13:31:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:15,324 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 13:31:15,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:31:15,324 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 13:31:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:15,325 INFO L225 Difference]: With dead ends: 155 [2018-07-25 13:31:15,325 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:31:15,326 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:31:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:31:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 13:31:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 13:31:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 13:31:15,331 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 13:31:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,331 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 13:31:15,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:31:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 13:31:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 13:31:15,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,333 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 13:31:15,333 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 13:31:15,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:15,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:15,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:31:15,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:31:15,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:31:15,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:31:15,646 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 13:31:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:15,737 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 13:31:15,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:31:15,737 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 13:31:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:15,738 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:31:15,738 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 13:31:15,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:31:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 13:31:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 13:31:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 13:31:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 13:31:15,744 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 13:31:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,745 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 13:31:15,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:31:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 13:31:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 13:31:15,746 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,746 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 13:31:15,746 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:15,746 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 13:31:15,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:16,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:16,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:31:16,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:31:16,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:31:16,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:31:16,072 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 13:31:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,146 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 13:31:16,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:31:16,146 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 13:31:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,147 INFO L225 Difference]: With dead ends: 159 [2018-07-25 13:31:16,147 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 13:31:16,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:31:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 13:31:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 13:31:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 13:31:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 13:31:16,153 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 13:31:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:16,153 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 13:31:16,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:31:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 13:31:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 13:31:16,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:16,154 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 13:31:16,155 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 13:31:16,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:16,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:16,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:31:16,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:31:16,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:31:16,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:31:16,554 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 13:31:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,699 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 13:31:16,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:31:16,700 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 13:31:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,701 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:31:16,701 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:31:16,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:31:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:31:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 13:31:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 13:31:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 13:31:16,709 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 13:31:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:16,709 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 13:31:16,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:31:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 13:31:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 13:31:16,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:16,710 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 13:31:16,710 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 13:31:16,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:17,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:17,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:31:17,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:31:17,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:31:17,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:17,118 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 13:31:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:17,267 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 13:31:17,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:31:17,267 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 13:31:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:17,268 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:31:17,269 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 13:31:17,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 13:31:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 13:31:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 13:31:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 13:31:17,275 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 13:31:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:17,275 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 13:31:17,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:31:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 13:31:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 13:31:17,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:17,276 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 13:31:17,277 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 13:31:17,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:17,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:17,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:31:17,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:31:17,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:31:17,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:17,744 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 13:31:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:17,833 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 13:31:17,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:31:17,833 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 13:31:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:17,834 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:31:17,835 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 13:31:17,835 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:17,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 13:31:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 13:31:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 13:31:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 13:31:17,842 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 13:31:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:17,843 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 13:31:17,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:31:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 13:31:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 13:31:17,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:17,844 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 13:31:17,845 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 13:31:17,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:18,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:18,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:31:18,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:31:18,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:31:18,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:18,495 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 13:31:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:18,616 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 13:31:18,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:31:18,616 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 13:31:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:18,617 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:31:18,617 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:31:18,618 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:31:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 13:31:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 13:31:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 13:31:18,623 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 13:31:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:18,623 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 13:31:18,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:31:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 13:31:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 13:31:18,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:18,624 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 13:31:18,624 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:18,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 13:31:18,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:18,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:18,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:31:18,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:31:18,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:31:18,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:31:18,960 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 13:31:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,063 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 13:31:19,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:31:19,063 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 13:31:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,064 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:31:19,064 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 13:31:19,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:31:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 13:31:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 13:31:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 13:31:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 13:31:19,070 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 13:31:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,070 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 13:31:19,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:31:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 13:31:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 13:31:19,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,071 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 13:31:19,072 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 13:31:19,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:19,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:31:19,350 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:31:19,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:31:19,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:19,351 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 13:31:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,446 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 13:31:19,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:31:19,446 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 13:31:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,448 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:31:19,448 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 13:31:19,448 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 13:31:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 13:31:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 13:31:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 13:31:19,453 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 13:31:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,454 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 13:31:19,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:31:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 13:31:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 13:31:19,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,455 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 13:31:19,455 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 13:31:19,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:19,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:31:19,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:31:19,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:31:19,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:31:19,752 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 13:31:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,851 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 13:31:19,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:31:19,851 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 13:31:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,852 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:31:19,852 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:31:19,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:31:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:31:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 13:31:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 13:31:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 13:31:19,858 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 13:31:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,859 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 13:31:19,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:31:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 13:31:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 13:31:19,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,860 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 13:31:19,860 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 13:31:19,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:20,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:20,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:31:20,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:31:20,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:31:20,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:31:20,157 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 13:31:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,270 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 13:31:20,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:31:20,271 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 13:31:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,272 INFO L225 Difference]: With dead ends: 175 [2018-07-25 13:31:20,272 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 13:31:20,273 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:31:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 13:31:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 13:31:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 13:31:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 13:31:20,280 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 13:31:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,281 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 13:31:20,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:31:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 13:31:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 13:31:20,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,283 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 13:31:20,284 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 13:31:20,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:20,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:20,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:31:20,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:31:20,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:31:20,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:20,585 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 13:31:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,738 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 13:31:20,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:31:20,739 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 13:31:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,740 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:31:20,741 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 13:31:20,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 13:31:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 13:31:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 13:31:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 13:31:20,747 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 13:31:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,748 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 13:31:20,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:31:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 13:31:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 13:31:20,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,749 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 13:31:20,749 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 13:31:20,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:21,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:21,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:31:21,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:31:21,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:31:21,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:21,139 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 13:31:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:21,205 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 13:31:21,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:31:21,205 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 13:31:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:21,206 INFO L225 Difference]: With dead ends: 179 [2018-07-25 13:31:21,206 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:31:21,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:31:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 13:31:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 13:31:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 13:31:21,212 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 13:31:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:21,212 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 13:31:21,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:31:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 13:31:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 13:31:21,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:21,214 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 13:31:21,214 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 13:31:21,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:21,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:21,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:31:21,574 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:31:21,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:31:21,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:31:21,575 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 13:31:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:21,677 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 13:31:21,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:31:21,678 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 13:31:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:21,679 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:31:21,679 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 13:31:21,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:31:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 13:31:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 13:31:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 13:31:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 13:31:21,683 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 13:31:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:21,684 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 13:31:21,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:31:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 13:31:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 13:31:21,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:21,685 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 13:31:21,685 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 13:31:21,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:22,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:22,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:31:22,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:31:22,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:31:22,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:31:22,038 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 13:31:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:22,158 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 13:31:22,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:31:22,158 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 13:31:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:22,159 INFO L225 Difference]: With dead ends: 183 [2018-07-25 13:31:22,159 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 13:31:22,160 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:31:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 13:31:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 13:31:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 13:31:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 13:31:22,166 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 13:31:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:22,166 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 13:31:22,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:31:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 13:31:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 13:31:22,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:22,167 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 13:31:22,168 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 13:31:22,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:22,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:22,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:31:22,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:31:22,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:31:22,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:31:22,520 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 13:31:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:22,602 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 13:31:22,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:31:22,602 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 13:31:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:22,603 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:31:22,604 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:31:22,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:31:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:31:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 13:31:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 13:31:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 13:31:22,611 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 13:31:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:22,611 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 13:31:22,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:31:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 13:31:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 13:31:22,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:22,613 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 13:31:22,613 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 13:31:22,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:23,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:23,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:31:23,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:31:23,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:31:23,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:31:23,047 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 13:31:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,210 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 13:31:23,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:31:23,210 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 13:31:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,211 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:31:23,211 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 13:31:23,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:31:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 13:31:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 13:31:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 13:31:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 13:31:23,221 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 13:31:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:23,221 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 13:31:23,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:31:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 13:31:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 13:31:23,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:23,223 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 13:31:23,224 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 13:31:23,224 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:23,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:23,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:31:23,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:31:23,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:31:23,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:31:23,680 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 13:31:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,758 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 13:31:23,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:31:23,758 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 13:31:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,759 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:31:23,760 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 13:31:23,760 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:31:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 13:31:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 13:31:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 13:31:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 13:31:23,764 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 13:31:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:23,765 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 13:31:23,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:31:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 13:31:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 13:31:23,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:23,766 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 13:31:23,766 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 13:31:23,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:24,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:24,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:31:24,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:31:24,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:31:24,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:31:24,298 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 13:31:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:24,463 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 13:31:24,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:31:24,463 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 13:31:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:24,465 INFO L225 Difference]: With dead ends: 191 [2018-07-25 13:31:24,465 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:31:24,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:31:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:31:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 13:31:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 13:31:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 13:31:24,471 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 13:31:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:24,472 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 13:31:24,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:31:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 13:31:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 13:31:24,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:24,473 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 13:31:24,473 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 13:31:24,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:24,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:24,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:31:24,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:31:24,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:31:24,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:31:24,919 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 13:31:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:25,087 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 13:31:25,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:31:25,087 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 13:31:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:25,088 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:31:25,088 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 13:31:25,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:31:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 13:31:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 13:31:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 13:31:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 13:31:25,093 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 13:31:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:25,093 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 13:31:25,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:31:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 13:31:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 13:31:25,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:25,094 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 13:31:25,095 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:25,095 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 13:31:25,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:25,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:25,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:31:25,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:31:25,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:31:25,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:31:25,468 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 13:31:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:25,572 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 13:31:25,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:31:25,573 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 13:31:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:25,574 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:31:25,574 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 13:31:25,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:31:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 13:31:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 13:31:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 13:31:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 13:31:25,580 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 13:31:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:25,581 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 13:31:25,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:31:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 13:31:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 13:31:25,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:25,582 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 13:31:25,582 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:25,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 13:31:25,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:26,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:26,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:31:26,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:31:26,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:31:26,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:31:26,035 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 13:31:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:26,103 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 13:31:26,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:31:26,103 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 13:31:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:26,104 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:31:26,104 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:31:26,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:31:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:31:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 13:31:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 13:31:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 13:31:26,110 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 13:31:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:26,111 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 13:31:26,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:31:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 13:31:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 13:31:26,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:26,112 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 13:31:26,113 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 13:31:26,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:26,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:26,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:31:26,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:31:26,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:31:26,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:31:26,516 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 13:31:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:26,614 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 13:31:26,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:31:26,615 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 13:31:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:26,616 INFO L225 Difference]: With dead ends: 199 [2018-07-25 13:31:26,616 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 13:31:26,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:31:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 13:31:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 13:31:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 13:31:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 13:31:26,623 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 13:31:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:26,623 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 13:31:26,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:31:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 13:31:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 13:31:26,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:26,624 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 13:31:26,625 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 13:31:26,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:26,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:26,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:31:26,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:31:26,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:31:26,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:31:26,970 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 13:31:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:27,100 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 13:31:27,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:31:27,100 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 13:31:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:27,102 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:31:27,102 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 13:31:27,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:31:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 13:31:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 13:31:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 13:31:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 13:31:27,109 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 13:31:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,109 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 13:31:27,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:31:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 13:31:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 13:31:27,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,111 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 13:31:27,111 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 13:31:27,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:27,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:27,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:31:27,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:31:27,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:31:27,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:31:27,763 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 13:31:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:27,930 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 13:31:27,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:31:27,931 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 13:31:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:27,932 INFO L225 Difference]: With dead ends: 203 [2018-07-25 13:31:27,932 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:31:27,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:31:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:31:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 13:31:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 13:31:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 13:31:27,947 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 13:31:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,947 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 13:31:27,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:31:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 13:31:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 13:31:27,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,951 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 13:31:27,951 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 13:31:27,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:28,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:28,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:31:28,543 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:31:28,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:31:28,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:31:28,546 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 13:31:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:28,672 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 13:31:28,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:31:28,672 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 13:31:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:28,673 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:31:28,674 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 13:31:28,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:31:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 13:31:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 13:31:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 13:31:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 13:31:28,681 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 13:31:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:28,681 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 13:31:28,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:31:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 13:31:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 13:31:28,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:28,683 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 13:31:28,683 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 13:31:28,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:29,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:29,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:31:29,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:31:29,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:31:29,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:31:29,256 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 13:31:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:29,402 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 13:31:29,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:31:29,402 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 13:31:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:29,403 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:31:29,403 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 13:31:29,404 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:31:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 13:31:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 13:31:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 13:31:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 13:31:29,413 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 13:31:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:29,413 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 13:31:29,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:31:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 13:31:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 13:31:29,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:29,415 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 13:31:29,415 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 13:31:29,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:29,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:29,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:31:29,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:31:29,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:31:29,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:31:29,838 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 13:31:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:30,034 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 13:31:30,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:31:30,034 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 13:31:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:30,035 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:31:30,036 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:31:30,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:31:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:31:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 13:31:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 13:31:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 13:31:30,042 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 13:31:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:30,043 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 13:31:30,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:31:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 13:31:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 13:31:30,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:30,044 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 13:31:30,044 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 13:31:30,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:30,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:30,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:31:30,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:31:30,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:31:30,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:31:30,451 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 13:31:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:30,555 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 13:31:30,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:31:30,555 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 13:31:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:30,555 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:31:30,555 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 13:31:30,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:31:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 13:31:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 13:31:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 13:31:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 13:31:30,560 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 13:31:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:30,560 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 13:31:30,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:31:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 13:31:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 13:31:30,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:30,561 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 13:31:30,561 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 13:31:30,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:30,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:30,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:31:30,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:31:30,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:31:30,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:31:30,966 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 13:31:31,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,134 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 13:31:31,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:31:31,135 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 13:31:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,135 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:31:31,135 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 13:31:31,137 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:31:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 13:31:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 13:31:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 13:31:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 13:31:31,143 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 13:31:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,143 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 13:31:31,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:31:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 13:31:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 13:31:31,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,144 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 13:31:31,145 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 13:31:31,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:31,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:31,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:31:31,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:31:31,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:31:31,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:31:31,568 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 13:31:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,758 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 13:31:31,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:31:31,758 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 13:31:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,759 INFO L225 Difference]: With dead ends: 215 [2018-07-25 13:31:31,759 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:31:31,760 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:31:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:31:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 13:31:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 13:31:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 13:31:31,766 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 13:31:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,766 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 13:31:31,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:31:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 13:31:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 13:31:31,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,767 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 13:31:31,768 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 13:31:31,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:32,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:32,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:31:32,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:31:32,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:31:32,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:31:32,267 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 13:31:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:32,497 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 13:31:32,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:31:32,497 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 13:31:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:32,498 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:31:32,498 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 13:31:32,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:31:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 13:31:32,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 13:31:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 13:31:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 13:31:32,503 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 13:31:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:32,503 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 13:31:32,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:31:32,503 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 13:31:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 13:31:32,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:32,504 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 13:31:32,504 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 13:31:32,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:32,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:32,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:31:32,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:31:32,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:31:32,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:31:32,978 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 13:31:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:33,090 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 13:31:33,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:31:33,090 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 13:31:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:33,091 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:31:33,091 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 13:31:33,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:31:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 13:31:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 13:31:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 13:31:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 13:31:33,097 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 13:31:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:33,097 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 13:31:33,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:31:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 13:31:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 13:31:33,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:33,099 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 13:31:33,099 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:33,099 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 13:31:33,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:33,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:33,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:31:33,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:31:33,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:31:33,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:31:33,609 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 13:31:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:33,860 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 13:31:33,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:31:33,860 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 13:31:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:33,861 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:31:33,861 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:31:33,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:31:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:31:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 13:31:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 13:31:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 13:31:33,867 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 13:31:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:33,867 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 13:31:33,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:31:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 13:31:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 13:31:33,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:33,868 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 13:31:33,868 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 13:31:33,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:34,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:34,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:31:34,358 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:31:34,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:31:34,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:31:34,360 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 13:31:34,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:34,543 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 13:31:34,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:31:34,544 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 13:31:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:34,544 INFO L225 Difference]: With dead ends: 223 [2018-07-25 13:31:34,544 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 13:31:34,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:31:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 13:31:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 13:31:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 13:31:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 13:31:34,549 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 13:31:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:34,549 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 13:31:34,550 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:31:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 13:31:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 13:31:34,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:34,551 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 13:31:34,551 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:34,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 13:31:34,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:35,032 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:35,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:31:35,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:31:35,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:31:35,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:31:35,034 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 13:31:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,199 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 13:31:35,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:31:35,200 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 13:31:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,200 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:31:35,200 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 13:31:35,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:31:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 13:31:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 13:31:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 13:31:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 13:31:35,208 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 13:31:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,209 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 13:31:35,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:31:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 13:31:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 13:31:35,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,210 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 13:31:35,211 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 13:31:35,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:35,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:35,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:31:35,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:31:35,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:31:35,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:31:35,743 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 13:31:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,902 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 13:31:35,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:31:35,902 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 13:31:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,903 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:31:35,903 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:31:35,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:31:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:31:35,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 13:31:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 13:31:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 13:31:35,907 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 13:31:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,907 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 13:31:35,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:31:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 13:31:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 13:31:35,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,909 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 13:31:35,909 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 13:31:35,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:36,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:36,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:31:36,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:31:36,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:31:36,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:31:36,388 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 13:31:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:36,544 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 13:31:36,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:31:36,544 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 13:31:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:36,545 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:31:36,545 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 13:31:36,546 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:31:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 13:31:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 13:31:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 13:31:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 13:31:36,551 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 13:31:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:36,552 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 13:31:36,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:31:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 13:31:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 13:31:36,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:36,553 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 13:31:36,553 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 13:31:36,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:37,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:37,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:31:37,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:31:37,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:31:37,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:31:37,051 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 13:31:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:37,248 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 13:31:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:31:37,248 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 13:31:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:37,249 INFO L225 Difference]: With dead ends: 231 [2018-07-25 13:31:37,249 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 13:31:37,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:31:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 13:31:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 13:31:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 13:31:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 13:31:37,255 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 13:31:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:37,256 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 13:31:37,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:31:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 13:31:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 13:31:37,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:37,257 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 13:31:37,257 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:37,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 13:31:37,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:37,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:37,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:31:37,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:31:37,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:31:37,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:31:37,840 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 13:31:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:38,045 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 13:31:38,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:31:38,046 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 13:31:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:38,046 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:31:38,047 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:31:38,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:31:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:31:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 13:31:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 13:31:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 13:31:38,053 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 13:31:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:38,053 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 13:31:38,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:31:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 13:31:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 13:31:38,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:38,055 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 13:31:38,055 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:38,055 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 13:31:38,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:38,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:38,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:31:38,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:31:38,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:31:38,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:31:38,674 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 13:31:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:38,893 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 13:31:38,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:31:38,894 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 13:31:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:38,894 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:31:38,894 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 13:31:38,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:31:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 13:31:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 13:31:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 13:31:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 13:31:38,901 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 13:31:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:38,901 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 13:31:38,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:31:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 13:31:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 13:31:38,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:38,902 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 13:31:38,903 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:38,903 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 13:31:38,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:39,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:39,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:31:39,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:31:39,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:31:39,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:31:39,483 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 13:31:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:39,755 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 13:31:39,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:31:39,755 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 13:31:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:39,756 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:31:39,756 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 13:31:39,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:31:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 13:31:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 13:31:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 13:31:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 13:31:39,763 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 13:31:39,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:39,763 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 13:31:39,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:31:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 13:31:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 13:31:39,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:39,764 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 13:31:39,765 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 13:31:39,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:40,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:31:40,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:31:40,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:31:40,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:31:40,285 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 13:31:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:40,397 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 13:31:40,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:31:40,397 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 13:31:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:40,398 INFO L225 Difference]: With dead ends: 239 [2018-07-25 13:31:40,398 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:31:40,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:31:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:31:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 13:31:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 13:31:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 13:31:40,402 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 13:31:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:40,403 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 13:31:40,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:31:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 13:31:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 13:31:40,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:40,404 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 13:31:40,404 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 13:31:40,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:40,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:31:40,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:31:40,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:31:40,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:31:40,910 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 13:31:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:41,096 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 13:31:41,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:31:41,097 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 13:31:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:41,097 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:31:41,097 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 13:31:41,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:31:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 13:31:41,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 13:31:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 13:31:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 13:31:41,103 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 13:31:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:41,103 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 13:31:41,103 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:31:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 13:31:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 13:31:41,104 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:41,105 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 13:31:41,105 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:41,105 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 13:31:41,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:41,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:41,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:31:41,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:31:41,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:31:41,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:31:41,695 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 13:31:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:41,985 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 13:31:41,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:31:41,985 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 13:31:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:41,986 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:31:41,986 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 13:31:41,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:31:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 13:31:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 13:31:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 13:31:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 13:31:41,995 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 13:31:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:41,995 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 13:31:41,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:31:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 13:31:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 13:31:41,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:41,997 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 13:31:41,997 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 13:31:41,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:42,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:42,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:31:42,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:31:42,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:31:42,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:31:42,881 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 13:31:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:43,119 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 13:31:43,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:31:43,119 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 13:31:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:43,120 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:31:43,120 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:31:43,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:31:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:31:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 13:31:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 13:31:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 13:31:43,126 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 13:31:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:43,126 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 13:31:43,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:31:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 13:31:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 13:31:43,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:43,128 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 13:31:43,128 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 13:31:43,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:43,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:43,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:31:43,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:31:43,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:31:43,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:31:43,711 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 13:31:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:43,842 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 13:31:43,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:31:43,842 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 13:31:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:43,842 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:31:43,843 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 13:31:43,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:31:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 13:31:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 13:31:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 13:31:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 13:31:43,847 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 13:31:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:43,847 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 13:31:43,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:31:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 13:31:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 13:31:43,848 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:43,848 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 13:31:43,848 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 13:31:43,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:44,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:44,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:31:44,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:31:44,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:31:44,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:31:44,448 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 13:31:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:44,808 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 13:31:44,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:31:44,808 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 13:31:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:44,809 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:31:44,809 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 13:31:44,810 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:31:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 13:31:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 13:31:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 13:31:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 13:31:44,816 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 13:31:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:44,816 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 13:31:44,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:31:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 13:31:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 13:31:44,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:44,818 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 13:31:44,818 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 13:31:44,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:45,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:45,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:31:45,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:31:45,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:31:45,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:31:45,472 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 13:31:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:45,786 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 13:31:45,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:31:45,786 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 13:31:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:45,787 INFO L225 Difference]: With dead ends: 251 [2018-07-25 13:31:45,787 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:31:45,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:31:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:31:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 13:31:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 13:31:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 13:31:45,793 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 13:31:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:45,794 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 13:31:45,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:31:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 13:31:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 13:31:45,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:45,795 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 13:31:45,795 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 13:31:45,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:46,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:46,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:31:46,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:31:46,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:31:46,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:31:46,468 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 13:31:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:46,624 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 13:31:46,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:31:46,625 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 13:31:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:46,625 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:31:46,625 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 13:31:46,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:31:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 13:31:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 13:31:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 13:31:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 13:31:46,630 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 13:31:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:46,630 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 13:31:46,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:31:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 13:31:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 13:31:46,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:46,631 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 13:31:46,631 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:46,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 13:31:46,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:47,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:47,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:31:47,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:31:47,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:31:47,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:31:47,308 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 13:31:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:47,599 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 13:31:47,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:31:47,599 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 13:31:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:47,600 INFO L225 Difference]: With dead ends: 255 [2018-07-25 13:31:47,600 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 13:31:47,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:31:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 13:31:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 13:31:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 13:31:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 13:31:47,605 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 13:31:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:47,605 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 13:31:47,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:31:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 13:31:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 13:31:47,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:47,606 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 13:31:47,606 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 13:31:47,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:48,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:48,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:31:48,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:31:48,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:31:48,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:31:48,181 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 13:31:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:48,318 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 13:31:48,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:31:48,318 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 13:31:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:48,318 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:31:48,319 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:31:48,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:31:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:31:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 13:31:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 13:31:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 13:31:48,325 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 13:31:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:48,325 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 13:31:48,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:31:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 13:31:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 13:31:48,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:48,327 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 13:31:48,327 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 13:31:48,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:48,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:48,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:31:48,929 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:31:48,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:31:48,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:31:48,931 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 13:31:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:49,231 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 13:31:49,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:31:49,231 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 13:31:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:49,231 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:31:49,231 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 13:31:49,232 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:31:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 13:31:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 13:31:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 13:31:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 13:31:49,238 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 13:31:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:49,238 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 13:31:49,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:31:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 13:31:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 13:31:49,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:49,240 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 13:31:49,240 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 13:31:49,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:50,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:50,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:31:50,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:31:50,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:31:50,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:31:50,039 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 13:31:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:50,165 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 13:31:50,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:31:50,165 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 13:31:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:50,166 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:31:50,166 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 13:31:50,167 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:31:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 13:31:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 13:31:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 13:31:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 13:31:50,172 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 13:31:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:50,173 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 13:31:50,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:31:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 13:31:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 13:31:50,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:50,174 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 13:31:50,174 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 13:31:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:50,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:50,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:31:50,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 13:31:50,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 13:31:50,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:31:50,767 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 13:31:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:51,086 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 13:31:51,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:31:51,087 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 13:31:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:51,087 INFO L225 Difference]: With dead ends: 263 [2018-07-25 13:31:51,087 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:31:51,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:31:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:31:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 13:31:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 13:31:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 13:31:51,094 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 13:31:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:51,094 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 13:31:51,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 13:31:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 13:31:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 13:31:51,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:51,096 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 13:31:51,096 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:51,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 13:31:51,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:51,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:51,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 13:31:51,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:31:51,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:31:51,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:31:51,723 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 13:31:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:52,040 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 13:31:52,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:31:52,041 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 13:31:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:52,041 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:31:52,041 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 13:31:52,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:31:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 13:31:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 13:31:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 13:31:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 13:31:52,047 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 13:31:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:52,048 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 13:31:52,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:31:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 13:31:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 13:31:52,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:52,049 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 13:31:52,049 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 13:31:52,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:52,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:52,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:31:52,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:31:52,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:31:52,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:31:52,680 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 13:31:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:52,939 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 13:31:52,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:31:52,939 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 13:31:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:52,939 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:31:52,940 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 13:31:52,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:31:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 13:31:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 13:31:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 13:31:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 13:31:52,946 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 13:31:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:52,946 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 13:31:52,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:31:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 13:31:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 13:31:52,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:52,948 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 13:31:52,948 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 13:31:52,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:53,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:53,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:31:53,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:31:53,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:31:53,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:31:53,689 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 13:31:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:54,001 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 13:31:54,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:31:54,002 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 13:31:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:54,002 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:31:54,002 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:31:54,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:31:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:31:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 13:31:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 13:31:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 13:31:54,006 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 13:31:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:54,007 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 13:31:54,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:31:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 13:31:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 13:31:54,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:54,008 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 13:31:54,008 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:54,008 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 13:31:54,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:54,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:54,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:31:54,663 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 13:31:54,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 13:31:54,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:31:54,665 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 13:31:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:55,096 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 13:31:55,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:31:55,096 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 13:31:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:55,097 INFO L225 Difference]: With dead ends: 271 [2018-07-25 13:31:55,097 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 13:31:55,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:31:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 13:31:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 13:31:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 13:31:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 13:31:55,102 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 13:31:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:55,102 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 13:31:55,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 13:31:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 13:31:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 13:31:55,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:55,103 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 13:31:55,103 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:55,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 13:31:55,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:55,791 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:55,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 13:31:55,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:31:55,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:31:55,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:31:55,794 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 13:31:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:55,955 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 13:31:55,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:31:55,955 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 13:31:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:55,955 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:31:55,956 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 13:31:55,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:31:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 13:31:55,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 13:31:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 13:31:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 13:31:55,960 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 13:31:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:55,960 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 13:31:55,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:31:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 13:31:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 13:31:55,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:55,961 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 13:31:55,962 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 13:31:55,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:56,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:56,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:31:56,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:31:56,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:31:56,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:31:56,675 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 13:31:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:57,040 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 13:31:57,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:31:57,041 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 13:31:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:57,041 INFO L225 Difference]: With dead ends: 275 [2018-07-25 13:31:57,042 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:31:57,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:31:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:31:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 13:31:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 13:31:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 13:31:57,049 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 13:31:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:57,049 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 13:31:57,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:31:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 13:31:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 13:31:57,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:57,051 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 13:31:57,051 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 13:31:57,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:57,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:57,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:31:57,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:31:57,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:31:57,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:31:57,966 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 13:31:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:58,406 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 13:31:58,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:31:58,406 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 13:31:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:58,407 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:31:58,407 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 13:31:58,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:31:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 13:31:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 13:31:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 13:31:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 13:31:58,412 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 13:31:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:58,412 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 13:31:58,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:31:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 13:31:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 13:31:58,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:58,413 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-07-25 13:31:58,413 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:58,413 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 13:31:58,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:59,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:59,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:31:59,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 13:31:59,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 13:31:59,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:31:59,148 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 13:31:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:59,593 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 13:31:59,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:31:59,593 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 13:31:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:59,594 INFO L225 Difference]: With dead ends: 279 [2018-07-25 13:31:59,594 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 13:31:59,595 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:31:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 13:31:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 13:31:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 13:31:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 13:31:59,599 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 13:31:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:59,599 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 13:31:59,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 13:31:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 13:31:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 13:31:59,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:59,600 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 13:31:59,600 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 13:31:59,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:00,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:00,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 13:32:00,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:32:00,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:32:00,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:32:00,340 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 13:32:00,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:00,872 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 13:32:00,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:32:00,872 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 13:32:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:00,873 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:32:00,873 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:32:00,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:32:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:32:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 13:32:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 13:32:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 13:32:00,878 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 13:32:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:00,878 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 13:32:00,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:32:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 13:32:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 13:32:00,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:00,879 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 13:32:00,879 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:00,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 13:32:00,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:01,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:01,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:32:01,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:32:01,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:32:01,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:32:01,697 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 13:32:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:02,216 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 13:32:02,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:32:02,216 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 13:32:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:02,216 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:32:02,217 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 13:32:02,217 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:32:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 13:32:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 13:32:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 13:32:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 13:32:02,221 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 13:32:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:02,221 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 13:32:02,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:32:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 13:32:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 13:32:02,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:02,223 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 13:32:02,223 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:02,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 13:32:02,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:03,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:03,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:32:03,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:32:03,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:32:03,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:32:03,052 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 13:32:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:03,670 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 13:32:03,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:32:03,671 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 13:32:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:03,671 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:32:03,671 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 13:32:03,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:32:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 13:32:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 13:32:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 13:32:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 13:32:03,677 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 13:32:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:03,677 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 13:32:03,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:32:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 13:32:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 13:32:03,678 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:03,678 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 13:32:03,679 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 13:32:03,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:04,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:04,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:32:04,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 13:32:04,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 13:32:04,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:32:04,621 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 13:32:05,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:05,348 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 13:32:05,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:32:05,348 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 13:32:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:05,349 INFO L225 Difference]: With dead ends: 287 [2018-07-25 13:32:05,349 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:32:05,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:32:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:32:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 13:32:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 13:32:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 13:32:05,356 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 13:32:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:05,357 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 13:32:05,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 13:32:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 13:32:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 13:32:05,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:05,358 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 13:32:05,359 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:05,359 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 13:32:05,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:06,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:06,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 13:32:06,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:32:06,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:32:06,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:32:06,318 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 13:32:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:07,075 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 13:32:07,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:32:07,076 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 13:32:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:07,076 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:32:07,077 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 13:32:07,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:32:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 13:32:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 13:32:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 13:32:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 13:32:07,083 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 13:32:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:07,083 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 13:32:07,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:32:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 13:32:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 13:32:07,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:07,084 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 13:32:07,084 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 13:32:07,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:08,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:08,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:32:08,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:32:08,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:32:08,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:32:08,058 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 13:32:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:08,851 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 13:32:08,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:32:08,851 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 13:32:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:08,852 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:32:08,852 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 13:32:08,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:32:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 13:32:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 13:32:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 13:32:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 13:32:08,858 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 13:32:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:08,858 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 13:32:08,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:32:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 13:32:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 13:32:08,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:08,859 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 13:32:08,859 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:08,859 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 13:32:08,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:09,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:09,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:32:09,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:32:09,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:32:09,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:32:09,799 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 13:32:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:10,484 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 13:32:10,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:32:10,484 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 13:32:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:10,485 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:32:10,485 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:32:10,486 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:32:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:32:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 13:32:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 13:32:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 13:32:10,491 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 13:32:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:10,491 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 13:32:10,491 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:32:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 13:32:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 13:32:10,492 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:10,492 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 13:32:10,492 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 13:32:10,493 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:11,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:11,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:32:11,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 13:32:11,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 13:32:11,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:32:11,469 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 13:32:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:12,166 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 13:32:12,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:32:12,166 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 13:32:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:12,167 INFO L225 Difference]: With dead ends: 295 [2018-07-25 13:32:12,167 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 13:32:12,169 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:32:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 13:32:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 13:32:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 13:32:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 13:32:12,173 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 13:32:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:12,174 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 13:32:12,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 13:32:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 13:32:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 13:32:12,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:12,175 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 13:32:12,175 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 13:32:12,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:13,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:13,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 13:32:13,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:32:13,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:32:13,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:32:13,168 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 13:32:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:13,699 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 13:32:13,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:32:13,699 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 13:32:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:13,700 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:32:13,700 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 13:32:13,701 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:32:13,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 13:32:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 13:32:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 13:32:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 13:32:13,705 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 13:32:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:13,706 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 13:32:13,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:32:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 13:32:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 13:32:13,707 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:13,707 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 13:32:13,707 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 13:32:13,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:14,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:14,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:32:14,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:32:14,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:32:14,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:32:14,583 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 13:32:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:14,824 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 13:32:14,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:32:14,824 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 13:32:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:14,825 INFO L225 Difference]: With dead ends: 299 [2018-07-25 13:32:14,825 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:32:14,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:32:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:32:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 13:32:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 13:32:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 13:32:14,833 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 13:32:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:14,834 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 13:32:14,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:32:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 13:32:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 13:32:14,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:14,836 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 13:32:14,836 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:14,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 13:32:14,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:15,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:15,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:32:15,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:32:15,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:32:15,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:32:15,936 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 13:32:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:16,781 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 13:32:16,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:32:16,781 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 13:32:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:16,782 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:32:16,782 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 13:32:16,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:32:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 13:32:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 13:32:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 13:32:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 13:32:16,787 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 13:32:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:16,787 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 13:32:16,787 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:32:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 13:32:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 13:32:16,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:16,788 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 13:32:16,788 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 13:32:16,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:17,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:17,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:32:17,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 13:32:17,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 13:32:17,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:32:17,676 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 13:32:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:18,284 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 13:32:18,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:32:18,284 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 13:32:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:18,285 INFO L225 Difference]: With dead ends: 303 [2018-07-25 13:32:18,285 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 13:32:18,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:32:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 13:32:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 13:32:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 13:32:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 13:32:18,290 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 13:32:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:18,291 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 13:32:18,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 13:32:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 13:32:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 13:32:18,292 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:18,292 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 13:32:18,292 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 13:32:18,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:19,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:19,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 13:32:19,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:32:19,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:32:19,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:32:19,282 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 13:32:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:19,703 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 13:32:19,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:32:19,703 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 13:32:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:19,704 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:32:19,704 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:32:19,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:32:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:32:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 13:32:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 13:32:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 13:32:19,710 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 13:32:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:19,710 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 13:32:19,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:32:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 13:32:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 13:32:19,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:19,712 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 13:32:19,712 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 13:32:19,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:20,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:20,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:32:20,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:32:20,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:32:20,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:32:20,740 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 13:32:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:21,554 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 13:32:21,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:32:21,555 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 13:32:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:21,556 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:32:21,556 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 13:32:21,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:32:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 13:32:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 13:32:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 13:32:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 13:32:21,562 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 13:32:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:21,563 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 13:32:21,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:32:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 13:32:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 13:32:21,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:21,564 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 13:32:21,564 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:21,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 13:32:21,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:22,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:22,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:32:22,600 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:32:22,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:32:22,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:32:22,603 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 13:32:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:23,443 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 13:32:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:32:23,444 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 13:32:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:23,445 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:32:23,445 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 13:32:23,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:32:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 13:32:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 13:32:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 13:32:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 13:32:23,453 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 13:32:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:23,454 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 13:32:23,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:32:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 13:32:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 13:32:23,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:23,455 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 13:32:23,455 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 13:32:23,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:24,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:24,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:32:24,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 13:32:24,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 13:32:24,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:32:24,753 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 13:32:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:25,055 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 13:32:25,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:32:25,055 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 13:32:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:25,056 INFO L225 Difference]: With dead ends: 311 [2018-07-25 13:32:25,056 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:32:25,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:32:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:32:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 13:32:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 13:32:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 13:32:25,062 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 13:32:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:25,062 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 13:32:25,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 13:32:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 13:32:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 13:32:25,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:25,063 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 13:32:25,063 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 13:32:25,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:26,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:26,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 13:32:26,004 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:32:26,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:32:26,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:32:26,007 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 13:32:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:26,767 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 13:32:26,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:32:26,767 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 13:32:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:26,768 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:32:26,768 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 13:32:26,769 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:32:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 13:32:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 13:32:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 13:32:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 13:32:26,773 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 13:32:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:26,774 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 13:32:26,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:32:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 13:32:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 13:32:26,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:26,775 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 13:32:26,775 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 13:32:26,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:27,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:27,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:32:27,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:32:27,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:32:27,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:32:27,751 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 13:32:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:28,006 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 13:32:28,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:32:28,007 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 13:32:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:28,007 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:32:28,007 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 13:32:28,009 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:32:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 13:32:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 13:32:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 13:32:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 13:32:28,013 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 13:32:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:28,013 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 13:32:28,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:32:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 13:32:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 13:32:28,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:28,015 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 13:32:28,015 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 13:32:28,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:28,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:28,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:32:28,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:32:28,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:32:28,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:32:28,990 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 13:32:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:29,788 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 13:32:29,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:32:29,788 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 13:32:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:29,789 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:32:29,789 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:32:29,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:32:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:32:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 13:32:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 13:32:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 13:32:29,797 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 13:32:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:29,797 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 13:32:29,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:32:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 13:32:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 13:32:29,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:29,799 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 13:32:29,799 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:29,799 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 13:32:29,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:30,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:30,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:32:30,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 13:32:30,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 13:32:30,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:32:30,913 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 13:32:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:31,275 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 13:32:31,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:32:31,275 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 13:32:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:31,276 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:32:31,276 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 13:32:31,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:32:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 13:32:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 13:32:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 13:32:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 13:32:31,281 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 13:32:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:31,281 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 13:32:31,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 13:32:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 13:32:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 13:32:31,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:31,282 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 13:32:31,282 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:31,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 13:32:31,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:32,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:32,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 13:32:32,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:32:32,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:32:32,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:32:32,260 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 13:32:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:33,051 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 13:32:33,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:32:33,052 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 13:32:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:33,052 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:32:33,052 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 13:32:33,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:32:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 13:32:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 13:32:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 13:32:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 13:32:33,058 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 13:32:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:33,058 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 13:32:33,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:32:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 13:32:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 13:32:33,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:33,059 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 13:32:33,059 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:33,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 13:32:33,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:34,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:34,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:32:34,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:32:34,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:32:34,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:32:34,068 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 13:32:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:34,982 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 13:32:34,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:32:34,982 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 13:32:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:34,983 INFO L225 Difference]: With dead ends: 323 [2018-07-25 13:32:34,983 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:32:34,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:32:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:32:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 13:32:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 13:32:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 13:32:34,988 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 13:32:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:34,989 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 13:32:34,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:32:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 13:32:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 13:32:34,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:34,990 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 13:32:34,990 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:34,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 13:32:34,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:35,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:35,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:32:35,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:32:35,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:32:35,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:32:35,996 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 13:32:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:36,267 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 13:32:36,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:32:36,267 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 13:32:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:36,268 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:32:36,268 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 13:32:36,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:32:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 13:32:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 13:32:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 13:32:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 13:32:36,273 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 13:32:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:36,273 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 13:32:36,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:32:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 13:32:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 13:32:36,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:36,274 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 13:32:36,275 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:36,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 13:32:36,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:37,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:37,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:32:37,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 13:32:37,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 13:32:37,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:32:37,349 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 13:32:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:38,241 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 13:32:38,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:32:38,241 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 13:32:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:38,242 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:32:38,242 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 13:32:38,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:32:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 13:32:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 13:32:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 13:32:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 13:32:38,248 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 13:32:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:38,248 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 13:32:38,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 13:32:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 13:32:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 13:32:38,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:38,250 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 13:32:38,250 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:38,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 13:32:38,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:39,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:39,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 13:32:39,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:32:39,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:32:39,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:32:39,410 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 13:32:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:40,315 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 13:32:40,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:32:40,315 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 13:32:40,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:40,316 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:32:40,316 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:32:40,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:32:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:32:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 13:32:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 13:32:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 13:32:40,320 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 13:32:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:40,321 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 13:32:40,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:32:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 13:32:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 13:32:40,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:40,322 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 13:32:40,322 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:40,322 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 13:32:40,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:41,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:41,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:32:41,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:32:41,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:32:41,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:32:41,372 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 13:32:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:42,105 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 13:32:42,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:32:42,105 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 13:32:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:42,106 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:32:42,106 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 13:32:42,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:32:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 13:32:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 13:32:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 13:32:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 13:32:42,112 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 13:32:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:42,112 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 13:32:42,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:32:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 13:32:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 13:32:42,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:42,113 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 13:32:42,113 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 13:32:42,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:43,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:43,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:32:43,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:32:43,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:32:43,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:32:43,157 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 13:32:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:43,506 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 13:32:43,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:32:43,506 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 13:32:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:43,507 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:32:43,507 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 13:32:43,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:32:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 13:32:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 13:32:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 13:32:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 13:32:43,516 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 13:32:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:43,516 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 13:32:43,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:32:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 13:32:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 13:32:43,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:43,518 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 13:32:43,518 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:43,518 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 13:32:43,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:44,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:44,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:32:44,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 13:32:44,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 13:32:44,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:32:44,777 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 13:32:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:45,286 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 13:32:45,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:32:45,287 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 13:32:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:45,287 INFO L225 Difference]: With dead ends: 335 [2018-07-25 13:32:45,287 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:32:45,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:32:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:32:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 13:32:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 13:32:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 13:32:45,293 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 13:32:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:45,294 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 13:32:45,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 13:32:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 13:32:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 13:32:45,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:45,295 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 13:32:45,295 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 13:32:45,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:46,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:46,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 13:32:46,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:32:46,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:32:46,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:32:46,494 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 13:32:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:47,491 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 13:32:47,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:32:47,491 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 13:32:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:47,491 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:32:47,492 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 13:32:47,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:32:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 13:32:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 13:32:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 13:32:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 13:32:47,498 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 13:32:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:47,499 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 13:32:47,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:32:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 13:32:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 13:32:47,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:47,500 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 13:32:47,500 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 13:32:47,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:48,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:48,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:32:48,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:32:48,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:32:48,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:32:48,762 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 13:32:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:49,669 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 13:32:49,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:32:49,669 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 13:32:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:49,670 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:32:49,670 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 13:32:49,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:32:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 13:32:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 13:32:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 13:32:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 13:32:49,676 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 13:32:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:49,676 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 13:32:49,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:32:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 13:32:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 13:32:49,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:49,677 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 13:32:49,677 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:49,677 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 13:32:49,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:50,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:50,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:32:50,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:32:50,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:32:50,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:32:50,784 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 13:32:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:51,749 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 13:32:51,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:32:51,749 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 13:32:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:51,750 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:32:51,750 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:32:51,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:32:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:32:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 13:32:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 13:32:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 13:32:51,756 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 13:32:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:51,756 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 13:32:51,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:32:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 13:32:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 13:32:51,758 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:51,758 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 13:32:51,758 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 13:32:51,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:52,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:52,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:32:52,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 13:32:52,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 13:32:52,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:32:52,903 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 13:32:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:54,002 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 13:32:54,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:32:54,003 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 13:32:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:54,003 INFO L225 Difference]: With dead ends: 343 [2018-07-25 13:32:54,003 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 13:32:54,005 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:32:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 13:32:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 13:32:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 13:32:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 13:32:54,009 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 13:32:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:54,009 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 13:32:54,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 13:32:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 13:32:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 13:32:54,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:54,010 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 13:32:54,011 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 13:32:54,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:55,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:55,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 13:32:55,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:32:55,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:32:55,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:32:55,150 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 13:32:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:56,177 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 13:32:56,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:32:56,178 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 13:32:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:56,178 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:32:56,178 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 13:32:56,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:32:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 13:32:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 13:32:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 13:32:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 13:32:56,184 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 13:32:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:56,184 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 13:32:56,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:32:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 13:32:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 13:32:56,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:56,186 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 13:32:56,186 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 13:32:56,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:57,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:57,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:32:57,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:32:57,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:32:57,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:32:57,302 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 13:32:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:58,606 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 13:32:58,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:32:58,606 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 13:32:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:58,607 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:32:58,607 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:32:58,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:32:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:32:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 13:32:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 13:32:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 13:32:58,614 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 13:32:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:58,614 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 13:32:58,615 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:32:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 13:32:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 13:32:58,616 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:58,616 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 13:32:58,616 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 13:32:58,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:59,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:59,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:32:59,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:32:59,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:32:59,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:32:59,932 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 13:33:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:00,733 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 13:33:00,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:33:00,733 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 13:33:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:00,734 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:33:00,734 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 13:33:00,735 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:33:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 13:33:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 13:33:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 13:33:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 13:33:00,742 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 13:33:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:00,742 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 13:33:00,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:33:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 13:33:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 13:33:00,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:00,744 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 13:33:00,744 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:00,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 13:33:00,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:01,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:01,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:33:01,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 13:33:01,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 13:33:01,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:33:01,981 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 13:33:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:02,421 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 13:33:02,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:33:02,421 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 13:33:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:02,422 INFO L225 Difference]: With dead ends: 351 [2018-07-25 13:33:02,422 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 13:33:02,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:33:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 13:33:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 13:33:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 13:33:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 13:33:02,428 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 13:33:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:02,428 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 13:33:02,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 13:33:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 13:33:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 13:33:02,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:02,429 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 13:33:02,430 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 13:33:02,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:03,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:03,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 13:33:03,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:33:03,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:33:03,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:33:03,716 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 13:33:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:04,202 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 13:33:04,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:33:04,202 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 13:33:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:04,203 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:33:04,203 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:33:04,204 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:33:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:33:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 13:33:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 13:33:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 13:33:04,209 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 13:33:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:04,210 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 13:33:04,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:33:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 13:33:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 13:33:04,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:04,211 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 13:33:04,211 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 13:33:04,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:05,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:05,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:33:05,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:33:05,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:33:05,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:33:05,567 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 13:33:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:06,974 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 13:33:06,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:33:06,974 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 13:33:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:06,975 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:33:06,975 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 13:33:06,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:33:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 13:33:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 13:33:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 13:33:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 13:33:06,982 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 13:33:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:06,982 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 13:33:06,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:33:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 13:33:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 13:33:06,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:06,983 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 13:33:06,983 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:06,984 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 13:33:06,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:08,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:08,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:33:08,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:33:08,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:33:08,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:33:08,404 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 13:33:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:09,965 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 13:33:09,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:33:09,966 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 13:33:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:09,966 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:33:09,966 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 13:33:09,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:33:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 13:33:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 13:33:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 13:33:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 13:33:09,972 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 13:33:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:09,972 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 13:33:09,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:33:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 13:33:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 13:33:09,973 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:09,974 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 13:33:09,974 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:09,974 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 13:33:09,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:11,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:11,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:33:11,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 13:33:11,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 13:33:11,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:33:11,390 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 13:33:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:12,266 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 13:33:12,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:33:12,266 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 13:33:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:12,267 INFO L225 Difference]: With dead ends: 359 [2018-07-25 13:33:12,267 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:33:12,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:33:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:33:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 13:33:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 13:33:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 13:33:12,273 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 13:33:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:12,273 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 13:33:12,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 13:33:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 13:33:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 13:33:12,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:12,274 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 13:33:12,275 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 13:33:12,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:13,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:13,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 13:33:13,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:33:13,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:33:13,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:33:13,549 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 13:33:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:14,008 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 13:33:14,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:33:14,008 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 13:33:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:14,009 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:33:14,009 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 13:33:14,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:33:14,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 13:33:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 13:33:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 13:33:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 13:33:14,015 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 13:33:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:14,015 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 13:33:14,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:33:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 13:33:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 13:33:14,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:14,016 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 13:33:14,017 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:14,017 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 13:33:14,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:15,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:15,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:33:15,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:33:15,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:33:15,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:33:15,293 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 13:33:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:16,740 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 13:33:16,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:33:16,740 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 13:33:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:16,741 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:33:16,741 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 13:33:16,742 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:33:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 13:33:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 13:33:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 13:33:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 13:33:16,747 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 13:33:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:16,747 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 13:33:16,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:33:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 13:33:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 13:33:16,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:16,749 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 13:33:16,749 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:16,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 13:33:16,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:18,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:18,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:33:18,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:33:18,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:33:18,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:33:18,064 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 13:33:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:18,809 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 13:33:18,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:33:18,809 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 13:33:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:18,810 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:33:18,810 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:33:18,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:33:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:33:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 13:33:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 13:33:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 13:33:18,815 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 13:33:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:18,815 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 13:33:18,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:33:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 13:33:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 13:33:18,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:18,817 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 13:33:18,817 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 13:33:18,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:20,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:20,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:33:20,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 13:33:20,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 13:33:20,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:33:20,121 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 13:33:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:21,039 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 13:33:21,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:33:21,040 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 13:33:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:21,040 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:33:21,040 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 13:33:21,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:33:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 13:33:21,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 13:33:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 13:33:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 13:33:21,047 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 13:33:21,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:21,047 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 13:33:21,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 13:33:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 13:33:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 13:33:21,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:21,048 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 13:33:21,049 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:21,049 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 13:33:21,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:22,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:22,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 13:33:22,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:33:22,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:33:22,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:33:22,435 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 13:33:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:23,663 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 13:33:23,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:33:23,663 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 13:33:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:23,664 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:33:23,664 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 13:33:23,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:33:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 13:33:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 13:33:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 13:33:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 13:33:23,670 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 13:33:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:23,671 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 13:33:23,671 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:33:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 13:33:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 13:33:23,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:23,672 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 13:33:23,672 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 13:33:23,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:25,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:25,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:33:25,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:33:25,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:33:25,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:33:25,004 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 13:33:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:25,657 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 13:33:25,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:33:25,658 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 13:33:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:25,658 INFO L225 Difference]: With dead ends: 371 [2018-07-25 13:33:25,658 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 13:33:25,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:33:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 13:33:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 13:33:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 13:33:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 13:33:25,665 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 13:33:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:25,665 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 13:33:25,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:33:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 13:33:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 13:33:25,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:25,666 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 13:33:25,666 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:25,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 13:33:25,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:27,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:27,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:33:27,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:33:27,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:33:27,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:33:27,092 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 13:33:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:28,379 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 13:33:28,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:33:28,379 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 13:33:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:28,380 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:33:28,380 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 13:33:28,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:33:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 13:33:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 13:33:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 13:33:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 13:33:28,385 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 13:33:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:28,385 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 13:33:28,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:33:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 13:33:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 13:33:28,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:28,386 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 13:33:28,386 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 13:33:28,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:29,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:29,722 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:33:29,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 13:33:29,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 13:33:29,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:33:29,726 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 13:33:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:30,611 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 13:33:30,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:33:30,612 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 13:33:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:30,612 INFO L225 Difference]: With dead ends: 375 [2018-07-25 13:33:30,612 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 13:33:30,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:33:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 13:33:30,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 13:33:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 13:33:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 13:33:30,621 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 13:33:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:30,621 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 13:33:30,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 13:33:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 13:33:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 13:33:30,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:30,622 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 13:33:30,623 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:30,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 13:33:30,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:32,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:32,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 13:33:32,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:33:32,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:33:32,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:33:32,165 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 13:33:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:33,307 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 13:33:33,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:33:33,307 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 13:33:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:33,308 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:33:33,308 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 13:33:33,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:33:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 13:33:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 13:33:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 13:33:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 13:33:33,314 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 13:33:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:33,314 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 13:33:33,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:33:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 13:33:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 13:33:33,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:33,316 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 13:33:33,316 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:33,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 13:33:33,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:34,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:34,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:33:34,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:33:34,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:33:34,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:33:34,700 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 13:33:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:36,436 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 13:33:36,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:33:36,436 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 13:33:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:36,436 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:33:36,437 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 13:33:36,438 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:33:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 13:33:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 13:33:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 13:33:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 13:33:36,443 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 13:33:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:36,443 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 13:33:36,443 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:33:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 13:33:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 13:33:36,444 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:36,445 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 13:33:36,445 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 13:33:36,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:37,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:37,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:33:37,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:33:37,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:33:37,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:33:37,930 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 13:33:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:38,408 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 13:33:38,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:33:38,408 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 13:33:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:38,409 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:33:38,409 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 13:33:38,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:33:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 13:33:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 13:33:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 13:33:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 13:33:38,414 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 13:33:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:38,415 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 13:33:38,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:33:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 13:33:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 13:33:38,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:38,417 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 13:33:38,417 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 13:33:38,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:39,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:39,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:33:39,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 13:33:39,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 13:33:39,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:33:39,875 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 13:33:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,064 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 13:33:41,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:33:41,065 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 13:33:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,065 INFO L225 Difference]: With dead ends: 383 [2018-07-25 13:33:41,065 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 13:33:41,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:33:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 13:33:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 13:33:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 13:33:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 13:33:41,072 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 13:33:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,072 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 13:33:41,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 13:33:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 13:33:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 13:33:41,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,073 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 13:33:41,073 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 13:33:41,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 13:33:42,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:33:42,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:33:42,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:33:42,631 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 13:33:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,869 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 13:33:44,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:33:44,870 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 13:33:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,870 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:33:44,870 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 13:33:44,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:33:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 13:33:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 13:33:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 13:33:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 13:33:44,877 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 13:33:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,877 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 13:33:44,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:33:44,878 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 13:33:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 13:33:44,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,879 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 13:33:44,879 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 13:33:44,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:46,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:46,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:33:46,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:33:46,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:33:46,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:33:46,543 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 13:33:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:48,003 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 13:33:48,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:33:48,003 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 13:33:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:48,004 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:33:48,004 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 13:33:48,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:33:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 13:33:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 13:33:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 13:33:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 13:33:48,012 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 13:33:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:48,012 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 13:33:48,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:33:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 13:33:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 13:33:48,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:48,014 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 13:33:48,015 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 13:33:48,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:49,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:49,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:33:49,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:33:49,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:33:49,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:33:49,722 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 13:33:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:50,298 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 13:33:50,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:33:50,298 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 13:33:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:50,299 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:33:50,299 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 13:33:50,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:33:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 13:33:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 13:33:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 13:33:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 13:33:50,306 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 13:33:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:50,306 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 13:33:50,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:33:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 13:33:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 13:33:50,308 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:50,309 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 13:33:50,309 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:50,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 13:33:50,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:51,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:51,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:33:51,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 13:33:51,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 13:33:51,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:33:51,789 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 13:33:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:52,718 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 13:33:52,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:33:52,718 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 13:33:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:52,719 INFO L225 Difference]: With dead ends: 391 [2018-07-25 13:33:52,719 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 13:33:52,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:33:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 13:33:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 13:33:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 13:33:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 13:33:52,725 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 13:33:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:52,726 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 13:33:52,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 13:33:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 13:33:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 13:33:52,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:52,727 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 13:33:52,727 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 13:33:52,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:54,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:54,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 13:33:54,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:33:54,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:33:54,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:33:54,509 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 13:33:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:56,184 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 13:33:56,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:33:56,184 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 13:33:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:56,184 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:33:56,185 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 13:33:56,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:33:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 13:33:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 13:33:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 13:33:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 13:33:56,192 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 13:33:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:56,192 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 13:33:56,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:33:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 13:33:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 13:33:56,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:56,193 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 13:33:56,193 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 13:33:56,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:57,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:57,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:33:57,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:33:57,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:33:57,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:33:57,795 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 13:33:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:59,819 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 13:33:59,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:33:59,819 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 13:33:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:59,820 INFO L225 Difference]: With dead ends: 395 [2018-07-25 13:33:59,820 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 13:33:59,821 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:33:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 13:33:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 13:33:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 13:33:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 13:33:59,826 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 13:33:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:59,826 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 13:33:59,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:33:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 13:33:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 13:33:59,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:59,828 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 13:33:59,828 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 13:33:59,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:01,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:01,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:34:01,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:34:01,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:34:01,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:34:01,569 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 13:34:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:04,208 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 13:34:04,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:34:04,208 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 13:34:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:04,209 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:34:04,209 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 13:34:04,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:34:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 13:34:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 13:34:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 13:34:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 13:34:04,217 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 13:34:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:04,217 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 13:34:04,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:34:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 13:34:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 13:34:04,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:04,219 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 13:34:04,219 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 13:34:04,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:05,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:05,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:34:05,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 13:34:05,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 13:34:05,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:34:05,979 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 13:34:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:08,616 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 13:34:08,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:34:08,616 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 13:34:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:08,617 INFO L225 Difference]: With dead ends: 399 [2018-07-25 13:34:08,617 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 13:34:08,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:34:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 13:34:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 13:34:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 13:34:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 13:34:08,625 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 13:34:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:08,625 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 13:34:08,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 13:34:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 13:34:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 13:34:08,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:08,627 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 13:34:08,627 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 13:34:08,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:10,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:10,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 13:34:10,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:34:10,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:34:10,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:34:10,453 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 13:34:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:12,861 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 13:34:12,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:34:12,861 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 13:34:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:12,862 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:34:12,862 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 13:34:12,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:34:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 13:34:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 13:34:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 13:34:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 13:34:12,868 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 13:34:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:12,868 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 13:34:12,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:34:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 13:34:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 13:34:12,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:12,870 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 13:34:12,870 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 13:34:12,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:14,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:14,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:34:14,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:34:14,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:34:14,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:34:14,740 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 13:34:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:17,523 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 13:34:17,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:34:17,523 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 13:34:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:17,524 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:34:17,524 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 13:34:17,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:34:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 13:34:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 13:34:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 13:34:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 13:34:17,533 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 13:34:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:17,533 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 13:34:17,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:34:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 13:34:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 13:34:17,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:17,534 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 13:34:17,535 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 13:34:17,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:19,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:19,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:34:19,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:34:19,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:34:19,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:34:19,239 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 13:34:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:21,590 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 13:34:21,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:34:21,590 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 13:34:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:21,591 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:34:21,591 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 13:34:21,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:34:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 13:34:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 13:34:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 13:34:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 13:34:21,597 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 13:34:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:21,598 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 13:34:21,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:34:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 13:34:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 13:34:21,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:21,599 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 13:34:21,599 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 13:34:21,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:23,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:23,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:34:23,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 13:34:23,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 13:34:23,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:34:23,303 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 13:34:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:24,743 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 13:34:24,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:34:24,744 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 13:34:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:24,745 INFO L225 Difference]: With dead ends: 407 [2018-07-25 13:34:24,745 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 13:34:24,746 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:34:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 13:34:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 13:34:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 13:34:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 13:34:24,751 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 13:34:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:24,751 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 13:34:24,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 13:34:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 13:34:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 13:34:24,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:24,753 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 13:34:24,753 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 13:34:24,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:26,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:26,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 13:34:26,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:34:26,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:34:26,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:34:26,380 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 13:34:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:27,120 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 13:34:27,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:34:27,120 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 13:34:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:27,121 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:34:27,121 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 13:34:27,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:34:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 13:34:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 13:34:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 13:34:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 13:34:27,131 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 13:34:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:27,132 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 13:34:27,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:34:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 13:34:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 13:34:27,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:27,134 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 13:34:27,134 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 13:34:27,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:28,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:28,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:34:28,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:34:28,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:34:28,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:34:28,747 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 13:34:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:29,721 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 13:34:29,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:34:29,721 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 13:34:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:29,722 INFO L225 Difference]: With dead ends: 411 [2018-07-25 13:34:29,722 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 13:34:29,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:34:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 13:34:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 13:34:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 13:34:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 13:34:29,729 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 13:34:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:29,729 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 13:34:29,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:34:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 13:34:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 13:34:29,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:29,731 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 13:34:29,731 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 13:34:29,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:31,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:31,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:34:31,396 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:34:31,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:34:31,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:34:31,399 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 13:34:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:33,097 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 13:34:33,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:34:33,097 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 13:34:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:33,098 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:34:33,098 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 13:34:33,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:34:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 13:34:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 13:34:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 13:34:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 13:34:33,106 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 13:34:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:33,106 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 13:34:33,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:34:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 13:34:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 13:34:33,108 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:33,108 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 13:34:33,108 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 13:34:33,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:34,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:34,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:34:34,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 13:34:34,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 13:34:34,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:34:34,824 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 13:34:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:36,723 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 13:34:36,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:34:36,723 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 13:34:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:36,724 INFO L225 Difference]: With dead ends: 415 [2018-07-25 13:34:36,724 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 13:34:36,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:34:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 13:34:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 13:34:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 13:34:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 13:34:36,730 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 13:34:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:36,730 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 13:34:36,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 13:34:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 13:34:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 13:34:36,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:36,731 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 13:34:36,731 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 13:34:36,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:38,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:38,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 13:34:38,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:34:38,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:34:38,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:34:38,546 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 13:34:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:39,960 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 13:34:39,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:34:39,960 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 13:34:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:39,961 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:34:39,961 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 13:34:39,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:34:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 13:34:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 13:34:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 13:34:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 13:34:39,968 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 13:34:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:39,968 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 13:34:39,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:34:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 13:34:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 13:34:39,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:39,970 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 13:34:39,970 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 13:34:39,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:41,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:41,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:34:41,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:34:41,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:34:41,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:34:41,819 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 13:34:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:42,929 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 13:34:42,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:34:42,929 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 13:34:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:42,930 INFO L225 Difference]: With dead ends: 419 [2018-07-25 13:34:42,930 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 13:34:42,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:34:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 13:34:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 13:34:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 13:34:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 13:34:42,937 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 13:34:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:42,938 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 13:34:42,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:34:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 13:34:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 13:34:42,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:42,939 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 13:34:42,939 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 13:34:42,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:44,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:44,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:34:44,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:34:44,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:34:44,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:34:44,790 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 13:34:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:47,144 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 13:34:47,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:34:47,144 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 13:34:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:47,145 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:34:47,145 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 13:34:47,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:34:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 13:34:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 13:34:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 13:34:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 13:34:47,152 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 13:34:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:47,152 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 13:34:47,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:34:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 13:34:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 13:34:47,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:47,154 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 13:34:47,154 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 13:34:47,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:49,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:49,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:34:49,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 13:34:49,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 13:34:49,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:34:49,306 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 13:34:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:50,950 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 13:34:50,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:34:50,950 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 13:34:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:50,951 INFO L225 Difference]: With dead ends: 423 [2018-07-25 13:34:50,951 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 13:34:50,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:34:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 13:34:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 13:34:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 13:34:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 13:34:50,961 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 13:34:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:50,961 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 13:34:50,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 13:34:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 13:34:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 13:34:50,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:50,963 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 13:34:50,963 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:50,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 13:34:50,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:53,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:53,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 13:34:53,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:34:53,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:34:53,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:34:53,098 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 13:34:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:55,623 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 13:34:55,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:34:55,623 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 13:34:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:55,624 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:34:55,624 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 13:34:55,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:34:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 13:34:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 13:34:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 13:34:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 13:34:55,632 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 13:34:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:55,632 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 13:34:55,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:34:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 13:34:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 13:34:55,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:55,633 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 13:34:55,634 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:55,634 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 13:34:55,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:57,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:57,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:34:57,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:34:57,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:34:57,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:34:57,513 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 13:34:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:58,633 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 13:34:58,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:34:58,634 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 13:34:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:58,634 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:34:58,634 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 13:34:58,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:34:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 13:34:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 13:34:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 13:34:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 13:34:58,640 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 13:34:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:58,641 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 13:34:58,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:34:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 13:34:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 13:34:58,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:58,642 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 13:34:58,642 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 13:34:58,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:00,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:00,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:35:00,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:35:00,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:35:00,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:35:00,744 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 13:35:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:03,441 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 13:35:03,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:35:03,441 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 13:35:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:03,442 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:35:03,442 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 13:35:03,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:35:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 13:35:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 13:35:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 13:35:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 13:35:03,450 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 13:35:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:03,450 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 13:35:03,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:35:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 13:35:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 13:35:03,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:03,452 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 13:35:03,452 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:03,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 13:35:03,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:05,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:05,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:35:05,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 13:35:05,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 13:35:05,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:35:05,641 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 13:35:07,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:07,824 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 13:35:07,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:35:07,824 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 13:35:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:07,825 INFO L225 Difference]: With dead ends: 431 [2018-07-25 13:35:07,825 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 13:35:07,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:35:07,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 13:35:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 13:35:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 13:35:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 13:35:07,833 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 13:35:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:07,834 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 13:35:07,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 13:35:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 13:35:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 13:35:07,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:07,835 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 13:35:07,836 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 13:35:07,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:09,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:09,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 13:35:09,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:35:09,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:35:09,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:35:09,985 INFO L87 Difference]: Start difference. First operand 430 states and 430 transitions. Second operand 216 states. [2018-07-25 13:35:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:13,081 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 13:35:13,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:35:13,081 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 429 [2018-07-25 13:35:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:13,082 INFO L225 Difference]: With dead ends: 433 [2018-07-25 13:35:13,082 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 13:35:13,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:35:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 13:35:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-07-25 13:35:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-07-25 13:35:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-07-25 13:35:13,089 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 429 [2018-07-25 13:35:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:13,089 INFO L472 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-07-25 13:35:13,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:35:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-07-25 13:35:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-25 13:35:13,090 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:13,090 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1] [2018-07-25 13:35:13,091 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1779562636, now seen corresponding path program 214 times [2018-07-25 13:35:13,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 13:35:14,729 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:35:14,735 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:35:14,735 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:35:14 BoogieIcfgContainer [2018-07-25 13:35:14,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:35:14,736 INFO L168 Benchmark]: Toolchain (without parser) took 259577.73 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 920.7 MB in the end (delta: 518.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-25 13:35:14,737 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:14,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:14,739 INFO L168 Benchmark]: Boogie Preprocessor took 21.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:14,740 INFO L168 Benchmark]: RCFGBuilder took 226.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:35:14,740 INFO L168 Benchmark]: TraceAbstraction took 259281.17 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 920.7 MB in the end (delta: 508.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-25 13:35:14,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 226.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259281.17 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 920.7 MB in the end (delta: 508.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 16). Cancelled while BasicCegarLoop was analyzing trace of length 432 with TraceHistMax 215, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 196 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 259.2s OverallTime, 215 OverallIterations, 215 TraceHistogramMax, 104.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 429 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 57529 SolverSat, 425 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23005 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23005 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 214 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 14.5s SatisfiabilityAnalysisTime, 121.0s InterpolantComputationTime, 46224 NumberOfCodeBlocks, 46224 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 46010 ConstructedInterpolants, 0 QuantifiedInterpolants, 65794300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 214 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3266710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-35-14-756.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-35-14-756.csv Completed graceful shutdown