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/LargeConstant-ForwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:30:53,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:30:53,300 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:30:53,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:30:53,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:30:53,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:30:53,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:30:53,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:30:53,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:30:53,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:30:53,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:30:53,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:30:53,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:30:53,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:30:53,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:30:53,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:30:53,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:30:53,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:30:53,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:30:53,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:30:53,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:30:53,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:30:53,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:30:53,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:30:53,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:30:53,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:30:53,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:30:53,347 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:30:53,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:30:53,352 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:30:53,352 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:30:53,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:30:53,358 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:30:53,372 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:30:53,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:30:53,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:30:53,375 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:30:53,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:30:53,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:30:53,375 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:30:53,375 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:30:53,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:30:53,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:30:53,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:30:53,440 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:30:53,441 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:30:53,442 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl [2018-07-25 13:30:53,442 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl' [2018-07-25 13:30:53,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:30:53,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:30:53,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:30:53,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:30:53,486 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:30:53,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,526 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:30:53,526 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:30:53,527 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:30:53,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:30:53,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:30:53,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:30:53,530 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:30:53,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:30:53,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:30:53,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:30:53,552 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:30:53,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/1) ... [2018-07-25 13:30:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2018-07-25 13:30:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2018-07-25 13:30:53,785 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:30:53,786 INFO L202 PluginConnector]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:30:53 BoogieIcfgContainer [2018-07-25 13:30:53,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:30:53,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:30:53,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:30:53,793 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:30:53,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:30:53" (1/2) ... [2018-07-25 13:30:53,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55187d2d and model type LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:30:53, skipping insertion in model container [2018-07-25 13:30:53,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:30:53" (2/2) ... [2018-07-25 13:30:53,800 INFO L112 eAbstractionObserver]: Analyzing ICFG LargeConstant-ForwardSuccess.bpl [2018-07-25 13:30:53,813 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:30:53,825 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:30:53,882 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:30:53,883 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:30:53,883 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:30:53,883 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:30:53,883 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:30:53,884 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:30:53,884 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:30:53,884 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:30:53,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:30:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:30:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:30:53,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:53,908 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:30:53,911 INFO L415 AbstractCegarLoop]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 13:30:53,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:53,992 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 13:30:53,996 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:30:53,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 13:30:54,000 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:30:54,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:30:54,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:30:54,017 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 13:30:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,045 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:30:54,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:30:54,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 13:30:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,058 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:30:54,058 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 13:30:54,062 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 13:30:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 13:30:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 13:30:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 13:30:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 13:30:54,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 13:30:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,102 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 13:30:54,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:30:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 13:30:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:30:54,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,104 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 13:30:54,104 INFO L415 AbstractCegarLoop]: === Iteration 2 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,104 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 13:30:54,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,127 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 13:30:54,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 13:30:54,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:30:54,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:30:54,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:30:54,132 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 13:30:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,152 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:30:54,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:30:54,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 13:30:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,153 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:30:54,153 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:30:54,155 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 13:30:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:30:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 13:30:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 13:30:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 13:30:54,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 13:30:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,159 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 13:30:54,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:30:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 13:30:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:30:54,160 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,160 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 13:30:54,161 INFO L415 AbstractCegarLoop]: === Iteration 3 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 13:30:54,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,193 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 13:30:54,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:30:54,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:30:54,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:30:54,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:30:54,195 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 13:30:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,215 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:30:54,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:30:54,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 13:30:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,216 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:30:54,216 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:30:54,217 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 13:30:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:30:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:30:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:30:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 13:30:54,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 13:30:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,221 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 13:30:54,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:30:54,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 13:30:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:30:54,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,222 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 13:30:54,223 INFO L415 AbstractCegarLoop]: === Iteration 4 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 13:30:54,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,282 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 13:30:54,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:30:54,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:30:54,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:30:54,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:30:54,285 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 13:30:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,312 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:30:54,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:30:54,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 13:30:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,313 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:30:54,314 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:30:54,314 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 13:30:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:30:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 13:30:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:30:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 13:30:54,319 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 13:30:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,319 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 13:30:54,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:30:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 13:30:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:30:54,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,321 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 13:30:54,321 INFO L415 AbstractCegarLoop]: === Iteration 5 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 13:30:54,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,401 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 13:30:54,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:30:54,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:30:54,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:30:54,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:30:54,403 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 13:30:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,428 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:30:54,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:30:54,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 13:30:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,433 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:30:54,433 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:30:54,434 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 13:30:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:30:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 13:30:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 13:30:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 13:30:54,442 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 13:30:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,445 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 13:30:54,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:30:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 13:30:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:30:54,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,447 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 13:30:54,447 INFO L415 AbstractCegarLoop]: === Iteration 6 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 13:30:54,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,538 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 13:30:54,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:30:54,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:30:54,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:30:54,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:30:54,540 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 13:30:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,561 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:30:54,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:30:54,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 13:30:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,562 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:30:54,562 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:30:54,563 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 13:30:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:30:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:30:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:30:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 13:30:54,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 13:30:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,571 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 13:30:54,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:30:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 13:30:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:30:54,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,572 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 13:30:54,572 INFO L415 AbstractCegarLoop]: === Iteration 7 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,573 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 13:30:54,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,616 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 13:30:54,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:30:54,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:30:54,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:30:54,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:30:54,618 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 13:30:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,648 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:30:54,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:30:54,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 13:30:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,650 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:30:54,650 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:30:54,653 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 13:30:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:30:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 13:30:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:30:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 13:30:54,665 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 13:30:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,665 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 13:30:54,666 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:30:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 13:30:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:30:54,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,667 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 13:30:54,667 INFO L415 AbstractCegarLoop]: === Iteration 8 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 13:30:54,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,715 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 13:30:54,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:30:54,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:30:54,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:30:54,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:30:54,717 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 13:30:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,748 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 13:30:54,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:30:54,749 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 13:30:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,750 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:30:54,750 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 13:30:54,750 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 13:30:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 13:30:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 13:30:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 13:30:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 13:30:54,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 13:30:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,756 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 13:30:54,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:30:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 13:30:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 13:30:54,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,757 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 13:30:54,758 INFO L415 AbstractCegarLoop]: === Iteration 9 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 13:30:54,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,830 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 13:30:54,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:30:54,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:30:54,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:30:54,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:30:54,834 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 13:30:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,879 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 13:30:54,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:30:54,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 13:30:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,881 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:30:54,881 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:30:54,885 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 13:30:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:30:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 13:30:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:30:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 13:30:54,892 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 13:30:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,893 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 13:30:54,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:30:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 13:30:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:30:54,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,896 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 13:30:54,901 INFO L415 AbstractCegarLoop]: === Iteration 10 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 13:30:54,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,960 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 13:30:54,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:30:54,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:30:54,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:30:54,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:30:54,962 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 13:30:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:54,981 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 13:30:54,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:30:54,982 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 13:30:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:54,983 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:30:54,983 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 13:30:54,984 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 13:30:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 13:30:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 13:30:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 13:30:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 13:30:54,989 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 13:30:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,989 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 13:30:54,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:30:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 13:30:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 13:30:54,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,991 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 13:30:54,991 INFO L415 AbstractCegarLoop]: === Iteration 11 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 13:30:54,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,092 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 13:30:55,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:30:55,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:30:55,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:30:55,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:30:55,098 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 13:30:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,124 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 13:30:55,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:30:55,125 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 13:30:55,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,126 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:30:55,126 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 13:30:55,129 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 13:30:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 13:30:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 13:30:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 13:30:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 13:30:55,140 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 13:30:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,141 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 13:30:55,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:30:55,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 13:30:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:30:55,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,143 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 13:30:55,144 INFO L415 AbstractCegarLoop]: === Iteration 12 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 13:30:55,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,257 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 13:30:55,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:30:55,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:30:55,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:30:55,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:30:55,261 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 13:30:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,298 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 13:30:55,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:30:55,299 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 13:30:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,300 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:30:55,302 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:30:55,303 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 13:30:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:30:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 13:30:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 13:30:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 13:30:55,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 13:30:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,316 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 13:30:55,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:30:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 13:30:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 13:30:55,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,318 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 13:30:55,319 INFO L415 AbstractCegarLoop]: === Iteration 13 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 13:30:55,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,396 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 13:30:55,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:30:55,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:30:55,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:30:55,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:30:55,399 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 13:30:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,429 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 13:30:55,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:30:55,433 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 13:30:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,434 INFO L225 Difference]: With dead ends: 31 [2018-07-25 13:30:55,434 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 13:30:55,435 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 13:30:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 13:30:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 13:30:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 13:30:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 13:30:55,446 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 13:30:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,447 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 13:30:55,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:30:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 13:30:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:30:55,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,452 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 13:30:55,453 INFO L415 AbstractCegarLoop]: === Iteration 14 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 13:30:55,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,532 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 13:30:55,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:30:55,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:30:55,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:30:55,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:30:55,540 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 13:30:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,581 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 13:30:55,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:30:55,582 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 13:30:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,583 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:30:55,583 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 13:30:55,584 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 13:30:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 13:30:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 13:30:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 13:30:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 13:30:55,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 13:30:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,598 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 13:30:55,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:30:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 13:30:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 13:30:55,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,600 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 13:30:55,601 INFO L415 AbstractCegarLoop]: === Iteration 15 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 13:30:55,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,674 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 13:30:55,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:30:55,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:30:55,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:30:55,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:30:55,676 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 13:30:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,704 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 13:30:55,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:30:55,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 13:30:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,705 INFO L225 Difference]: With dead ends: 35 [2018-07-25 13:30:55,706 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:30:55,707 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 13:30:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:30:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 13:30:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 13:30:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 13:30:55,716 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 13:30:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,717 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 13:30:55,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:30:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 13:30:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 13:30:55,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,721 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 13:30:55,722 INFO L415 AbstractCegarLoop]: === Iteration 16 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,722 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 13:30:55,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,809 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 13:30:55,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:30:55,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:30:55,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:30:55,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:30:55,816 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 13:30:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,832 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 13:30:55,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:30:55,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 13:30:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,833 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:30:55,834 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 13:30:55,834 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 13:30:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 13:30:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 13:30:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 13:30:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 13:30:55,842 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 13:30:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,843 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 13:30:55,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:30:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 13:30:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 13:30:55,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,844 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 13:30:55,844 INFO L415 AbstractCegarLoop]: === Iteration 17 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,845 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 13:30:55,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:55,920 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 13:30:55,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:55,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:30:55,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:30:55,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:30:55,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:30:55,922 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 13:30:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,946 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 13:30:55,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:30:55,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 13:30:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,947 INFO L225 Difference]: With dead ends: 39 [2018-07-25 13:30:55,947 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 13:30:55,948 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 13:30:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 13:30:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 13:30:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 13:30:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 13:30:55,956 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 13:30:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,956 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 13:30:55,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:30:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 13:30:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 13:30:55,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,960 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 13:30:55,960 INFO L415 AbstractCegarLoop]: === Iteration 18 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 13:30:55,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,035 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 13:30:56,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:30:56,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:30:56,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:30:56,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:30:56,038 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 13:30:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,066 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 13:30:56,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:30:56,067 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 13:30:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,068 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:30:56,068 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:30:56,071 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 13:30:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:30:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 13:30:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 13:30:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 13:30:56,083 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 13:30:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,083 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 13:30:56,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:30:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 13:30:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 13:30:56,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,085 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 13:30:56,085 INFO L415 AbstractCegarLoop]: === Iteration 19 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 13:30:56,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,191 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 13:30:56,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:30:56,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:30:56,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:30:56,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:30:56,195 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 13:30:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,214 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 13:30:56,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:30:56,214 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 13:30:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,215 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:30:56,215 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:30:56,216 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 13:30:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:30:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 13:30:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 13:30:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 13:30:56,224 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 13:30:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,224 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 13:30:56,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:30:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 13:30:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 13:30:56,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,227 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 13:30:56,227 INFO L415 AbstractCegarLoop]: === Iteration 20 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,227 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 13:30:56,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,323 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 13:30:56,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:30:56,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:30:56,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:30:56,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:30:56,326 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 13:30:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,356 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 13:30:56,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:30:56,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 13:30:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,357 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:30:56,357 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 13:30:56,358 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 13:30:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 13:30:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 13:30:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 13:30:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 13:30:56,368 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 13:30:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,369 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 13:30:56,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:30:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 13:30:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 13:30:56,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,372 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 13:30:56,372 INFO L415 AbstractCegarLoop]: === Iteration 21 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 13:30:56,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,465 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 13:30:56,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:30:56,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:30:56,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:30:56,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:30:56,472 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 13:30:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,502 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 13:30:56,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:30:56,502 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 13:30:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,503 INFO L225 Difference]: With dead ends: 47 [2018-07-25 13:30:56,503 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:30:56,504 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 13:30:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:30:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 13:30:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 13:30:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 13:30:56,519 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 13:30:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,519 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 13:30:56,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:30:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 13:30:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 13:30:56,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,520 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 13:30:56,521 INFO L415 AbstractCegarLoop]: === Iteration 22 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 13:30:56,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,625 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 13:30:56,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:30:56,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:30:56,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:30:56,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:30:56,628 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 13:30:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,651 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 13:30:56,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:30:56,652 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 13:30:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,652 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:30:56,653 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 13:30:56,653 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 13:30:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 13:30:56,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 13:30:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 13:30:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 13:30:56,658 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 13:30:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,659 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 13:30:56,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:30:56,659 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 13:30:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 13:30:56,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,660 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 13:30:56,660 INFO L415 AbstractCegarLoop]: === Iteration 23 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 13:30:56,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,768 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 13:30:56,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:30:56,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:30:56,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:30:56,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:30:56,771 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 13:30:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,792 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 13:30:56,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:30:56,793 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 13:30:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,793 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:30:56,794 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 13:30:56,794 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 13:30:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 13:30:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 13:30:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 13:30:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 13:30:56,799 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 13:30:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,800 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 13:30:56,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:30:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 13:30:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 13:30:56,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,801 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 13:30:56,801 INFO L415 AbstractCegarLoop]: === Iteration 24 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 13:30:56,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,916 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 13:30:56,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:30:56,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:30:56,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:30:56,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:30:56,919 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 13:30:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,940 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 13:30:56,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:30:56,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 13:30:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,941 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:30:56,941 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:30:56,942 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 13:30:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:30:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 13:30:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 13:30:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 13:30:56,947 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 13:30:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,948 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 13:30:56,948 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:30:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 13:30:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 13:30:56,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,949 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 13:30:56,950 INFO L415 AbstractCegarLoop]: === Iteration 25 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 13:30:56,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,086 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 13:30:57,087 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:30:57,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:30:57,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:30:57,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:30:57,089 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 13:30:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,112 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 13:30:57,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:30:57,112 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 13:30:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,113 INFO L225 Difference]: With dead ends: 55 [2018-07-25 13:30:57,113 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 13:30:57,114 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 13:30:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 13:30:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 13:30:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 13:30:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 13:30:57,118 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 13:30:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,118 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 13:30:57,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:30:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 13:30:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 13:30:57,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,119 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 13:30:57,120 INFO L415 AbstractCegarLoop]: === Iteration 26 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 13:30:57,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,243 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 13:30:57,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:30:57,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:30:57,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:30:57,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:30:57,246 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 13:30:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,268 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 13:30:57,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:30:57,268 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 13:30:57,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,269 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:30:57,270 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 13:30:57,271 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 13:30:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 13:30:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 13:30:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 13:30:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 13:30:57,281 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 13:30:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,281 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 13:30:57,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:30:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 13:30:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 13:30:57,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,283 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 13:30:57,283 INFO L415 AbstractCegarLoop]: === Iteration 27 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 13:30:57,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,416 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 13:30:57,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:30:57,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:30:57,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:30:57,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:30:57,418 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 13:30:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,442 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 13:30:57,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:30:57,442 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 13:30:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,443 INFO L225 Difference]: With dead ends: 59 [2018-07-25 13:30:57,443 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:30:57,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:30:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:30:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 13:30:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 13:30:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 13:30:57,448 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 13:30:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,449 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 13:30:57,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:30:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 13:30:57,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 13:30:57,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,450 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 13:30:57,450 INFO L415 AbstractCegarLoop]: === Iteration 28 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 13:30:57,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,581 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 13:30:57,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:30:57,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:30:57,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:30:57,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:30:57,583 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 13:30:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,605 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 13:30:57,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:30:57,605 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 13:30:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,606 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:30:57,606 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 13:30:57,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:30:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 13:30:57,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 13:30:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 13:30:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 13:30:57,611 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 13:30:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,612 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 13:30:57,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:30:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 13:30:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 13:30:57,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,613 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 13:30:57,613 INFO L415 AbstractCegarLoop]: === Iteration 29 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,613 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 13:30:57,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,748 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 13:30:57,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:30:57,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:30:57,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:30:57,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:30:57,750 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 13:30:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:57,777 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 13:30:57,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:30:57,777 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 13:30:57,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:57,778 INFO L225 Difference]: With dead ends: 63 [2018-07-25 13:30:57,778 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 13:30:57,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:30:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 13:30:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 13:30:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 13:30:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 13:30:57,783 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 13:30:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:57,784 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 13:30:57,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:30:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 13:30:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 13:30:57,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:57,785 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 13:30:57,785 INFO L415 AbstractCegarLoop]: === Iteration 30 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 13:30:57,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,982 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 13:30:57,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:30:57,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:30:57,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:30:57,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:30:57,984 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 13:30:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,009 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 13:30:58,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:30:58,010 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 13:30:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,011 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:30:58,011 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:30:58,012 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 13:30:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:30:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 13:30:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 13:30:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 13:30:58,015 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 13:30:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,016 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 13:30:58,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:30:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 13:30:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 13:30:58,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,017 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 13:30:58,017 INFO L415 AbstractCegarLoop]: === Iteration 31 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 13:30:58,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,162 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 13:30:58,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:30:58,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:30:58,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:30:58,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:30:58,164 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 13:30:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,190 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 13:30:58,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:30:58,190 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 13:30:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,191 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:30:58,191 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 13:30:58,193 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 13:30:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 13:30:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 13:30:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 13:30:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 13:30:58,197 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 13:30:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,197 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 13:30:58,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:30:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 13:30:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 13:30:58,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,198 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 13:30:58,198 INFO L415 AbstractCegarLoop]: === Iteration 32 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 13:30:58,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,354 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 13:30:58,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:30:58,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:30:58,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:30:58,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:30:58,356 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 13:30:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,379 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 13:30:58,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:30:58,380 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 13:30:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,380 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:30:58,381 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 13:30:58,382 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 13:30:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 13:30:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 13:30:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 13:30:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 13:30:58,386 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 13:30:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,386 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 13:30:58,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:30:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 13:30:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 13:30:58,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,388 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 13:30:58,388 INFO L415 AbstractCegarLoop]: === Iteration 33 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 13:30:58,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,537 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 13:30:58,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:30:58,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:30:58,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:30:58,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:30:58,542 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 13:30:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,569 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 13:30:58,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:30:58,570 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 13:30:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,570 INFO L225 Difference]: With dead ends: 71 [2018-07-25 13:30:58,570 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:30:58,572 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 13:30:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:30:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 13:30:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 13:30:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 13:30:58,576 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 13:30:58,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,576 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 13:30:58,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:30:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 13:30:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 13:30:58,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,578 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 13:30:58,578 INFO L415 AbstractCegarLoop]: === Iteration 34 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 13:30:58,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,721 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 13:30:58,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:30:58,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:30:58,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:30:58,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:30:58,723 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 13:30:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,753 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 13:30:58,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:30:58,754 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 13:30:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,754 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:30:58,754 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 13:30:58,755 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 13:30:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 13:30:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 13:30:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 13:30:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 13:30:58,759 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 13:30:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,760 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 13:30:58,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:30:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 13:30:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 13:30:58,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,761 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 13:30:58,761 INFO L415 AbstractCegarLoop]: === Iteration 35 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 13:30:58,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,903 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 13:30:58,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:30:58,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:30:58,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:30:58,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:30:58,905 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 13:30:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,938 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 13:30:58,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:30:58,939 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 13:30:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,939 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:30:58,940 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 13:30:58,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:30:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 13:30:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 13:30:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 13:30:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 13:30:58,946 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 13:30:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,946 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 13:30:58,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:30:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 13:30:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 13:30:58,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,949 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 13:30:58,949 INFO L415 AbstractCegarLoop]: === Iteration 36 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 13:30:58,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,104 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 13:30:59,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:30:59,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:30:59,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:30:59,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:30:59,107 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 13:30:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,131 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 13:30:59,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:30:59,131 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 13:30:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,132 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:30:59,132 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:30:59,133 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 13:30:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:30:59,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 13:30:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 13:30:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 13:30:59,136 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 13:30:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,137 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 13:30:59,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:30:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 13:30:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 13:30:59,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,138 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 13:30:59,138 INFO L415 AbstractCegarLoop]: === Iteration 37 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 13:30:59,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,290 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 13:30:59,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:30:59,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:30:59,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:30:59,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:30:59,292 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 13:30:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,325 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 13:30:59,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:30:59,326 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 13:30:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,326 INFO L225 Difference]: With dead ends: 79 [2018-07-25 13:30:59,327 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 13:30:59,328 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 13:30:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 13:30:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 13:30:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 13:30:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 13:30:59,332 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 13:30:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,332 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 13:30:59,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:30:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 13:30:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 13:30:59,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,333 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 13:30:59,333 INFO L415 AbstractCegarLoop]: === Iteration 38 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 13:30:59,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,486 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 13:30:59,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:30:59,487 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:30:59,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:30:59,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:30:59,489 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 13:30:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,515 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 13:30:59,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:30:59,515 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 13:30:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,516 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:30:59,516 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 13:30:59,517 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 13:30:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 13:30:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 13:30:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 13:30:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 13:30:59,521 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 13:30:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,521 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 13:30:59,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:30:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 13:30:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 13:30:59,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,523 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 13:30:59,523 INFO L415 AbstractCegarLoop]: === Iteration 39 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 13:30:59,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,686 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 13:30:59,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:30:59,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:30:59,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:30:59,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:30:59,689 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 13:30:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,723 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 13:30:59,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:30:59,723 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 13:30:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,724 INFO L225 Difference]: With dead ends: 83 [2018-07-25 13:30:59,724 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:30:59,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:30:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:30:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 13:30:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 13:30:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 13:30:59,729 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 13:30:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,729 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 13:30:59,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:30:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 13:30:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 13:30:59,730 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,731 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 13:30:59,731 INFO L415 AbstractCegarLoop]: === Iteration 40 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 13:30:59,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,904 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 13:30:59,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:30:59,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:30:59,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:30:59,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:30:59,906 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 13:30:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,943 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 13:30:59,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:30:59,944 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 13:30:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,944 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:30:59,944 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 13:30:59,946 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 13:30:59,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 13:30:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 13:30:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 13:30:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 13:30:59,949 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 13:30:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,950 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 13:30:59,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:30:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 13:30:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 13:30:59,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,951 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 13:30:59,951 INFO L415 AbstractCegarLoop]: === Iteration 41 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 13:30:59,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,148 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 13:31:00,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:31:00,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:31:00,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:31:00,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:31:00,150 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 13:31:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,189 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 13:31:00,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:31:00,189 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 13:31:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,190 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:31:00,190 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 13:31:00,191 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 13:31:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 13:31:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 13:31:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 13:31:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 13:31:00,196 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 13:31:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,196 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 13:31:00,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:31:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 13:31:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 13:31:00,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,197 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 13:31:00,198 INFO L415 AbstractCegarLoop]: === Iteration 42 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 13:31:00,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,433 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 13:31:00,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:31:00,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:31:00,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:31:00,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:31:00,435 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 13:31:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,474 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 13:31:00,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:31:00,475 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 13:31:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,476 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:31:00,476 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:31:00,477 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 13:31:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:31:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 13:31:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 13:31:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 13:31:00,481 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 13:31:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,482 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 13:31:00,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:31:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 13:31:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 13:31:00,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,483 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 13:31:00,483 INFO L415 AbstractCegarLoop]: === Iteration 43 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 13:31:00,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,658 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 13:31:00,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:31:00,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:31:00,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:31:00,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:31:00,661 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 13:31:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,696 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 13:31:00,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:31:00,696 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 13:31:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,697 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:31:00,697 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 13:31:00,699 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 13:31:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 13:31:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 13:31:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 13:31:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 13:31:00,702 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 13:31:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,703 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 13:31:00,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:31:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 13:31:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 13:31:00,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,704 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 13:31:00,704 INFO L415 AbstractCegarLoop]: === Iteration 44 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 13:31:00,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,873 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 13:31:00,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:31:00,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:31:00,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:31:00,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:31:00,875 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 13:31:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,906 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 13:31:00,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:31:00,906 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 13:31:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,907 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:31:00,907 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 13:31:00,908 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 13:31:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 13:31:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 13:31:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 13:31:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 13:31:00,912 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 13:31:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:00,912 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 13:31:00,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:31:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 13:31:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 13:31:00,913 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:00,914 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 13:31:00,914 INFO L415 AbstractCegarLoop]: === Iteration 45 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 13:31:00,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,099 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 13:31:01,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:31:01,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:31:01,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:31:01,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:31:01,101 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 13:31:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,152 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 13:31:01,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:31:01,152 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 13:31:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,153 INFO L225 Difference]: With dead ends: 95 [2018-07-25 13:31:01,153 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:31:01,154 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 13:31:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:31:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 13:31:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 13:31:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 13:31:01,158 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 13:31:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,159 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 13:31:01,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:31:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 13:31:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 13:31:01,160 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,160 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 13:31:01,160 INFO L415 AbstractCegarLoop]: === Iteration 46 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 13:31:01,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,351 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 13:31:01,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:31:01,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:31:01,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:31:01,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:31:01,353 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 13:31:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,389 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 13:31:01,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:31:01,389 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 13:31:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,390 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:31:01,390 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 13:31:01,391 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 13:31:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 13:31:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 13:31:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 13:31:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 13:31:01,395 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 13:31:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,396 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 13:31:01,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:31:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 13:31:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 13:31:01,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,397 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 13:31:01,397 INFO L415 AbstractCegarLoop]: === Iteration 47 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 13:31:01,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,572 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 13:31:01,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:31:01,573 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:31:01,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:31:01,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:31:01,574 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 13:31:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,607 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 13:31:01,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:31:01,607 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 13:31:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,608 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:31:01,608 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 13:31:01,609 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 13:31:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 13:31:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 13:31:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 13:31:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 13:31:01,613 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 13:31:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,614 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 13:31:01,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:31:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 13:31:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 13:31:01,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,615 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 13:31:01,615 INFO L415 AbstractCegarLoop]: === Iteration 48 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 13:31:01,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,804 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 13:31:01,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:31:01,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:31:01,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:31:01,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:31:01,806 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 13:31:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,842 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 13:31:01,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:31:01,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 13:31:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,843 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:31:01,843 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:31:01,844 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:31:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:31:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 13:31:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 13:31:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 13:31:01,849 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 13:31:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,849 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 13:31:01,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:31:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 13:31:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 13:31:01,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,851 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 13:31:01,851 INFO L415 AbstractCegarLoop]: === Iteration 49 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 13:31:01,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,053 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 13:31:02,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:31:02,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:31:02,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:31:02,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:31:02,055 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 13:31:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,096 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 13:31:02,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:31:02,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 13:31:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,097 INFO L225 Difference]: With dead ends: 103 [2018-07-25 13:31:02,097 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 13:31:02,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:31:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 13:31:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 13:31:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 13:31:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 13:31:02,103 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 13:31:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,104 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 13:31:02,104 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:31:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 13:31:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 13:31:02,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,105 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 13:31:02,105 INFO L415 AbstractCegarLoop]: === Iteration 50 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 13:31:02,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,310 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 13:31:02,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:31:02,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:31:02,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:31:02,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:31:02,313 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 13:31:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,358 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 13:31:02,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:31:02,359 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 13:31:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,360 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:31:02,360 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 13:31:02,361 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 13:31:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 13:31:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 13:31:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 13:31:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 13:31:02,366 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 13:31:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,366 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 13:31:02,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:31:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 13:31:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 13:31:02,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,367 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 13:31:02,368 INFO L415 AbstractCegarLoop]: === Iteration 51 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 13:31:02,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,629 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 13:31:02,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:31:02,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:31:02,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:31:02,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:31:02,632 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 13:31:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,693 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 13:31:02,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:31:02,693 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 13:31:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,694 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:31:02,694 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:31:02,695 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 13:31:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:31:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 13:31:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 13:31:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 13:31:02,701 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 13:31:02,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,701 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 13:31:02,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:31:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 13:31:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 13:31:02,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,703 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 13:31:02,703 INFO L415 AbstractCegarLoop]: === Iteration 52 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 13:31:02,704 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 13:31:03,004 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 13:31:03,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:31:03,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:31:03,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:31:03,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:31:03,007 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 13:31:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,054 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 13:31:03,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:31:03,054 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 13:31:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,055 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:31:03,055 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 13:31:03,056 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 13:31:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 13:31:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 13:31:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 13:31:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 13:31:03,061 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 13:31:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,061 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 13:31:03,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:31:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 13:31:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 13:31:03,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,062 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 13:31:03,063 INFO L415 AbstractCegarLoop]: === Iteration 53 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 13:31:03,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,276 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 13:31:03,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:31:03,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:31:03,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:31:03,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:31:03,280 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 13:31:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,341 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 13:31:03,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:31:03,341 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 13:31:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,342 INFO L225 Difference]: With dead ends: 111 [2018-07-25 13:31:03,342 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 13:31:03,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:31:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 13:31:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 13:31:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 13:31:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 13:31:03,348 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 13:31:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,349 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 13:31:03,349 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:31:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 13:31:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 13:31:03,350 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,350 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 13:31:03,350 INFO L415 AbstractCegarLoop]: === Iteration 54 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 13:31:03,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,576 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 13:31:03,577 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:31:03,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:31:03,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:31:03,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:31:03,579 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 13:31:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,645 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 13:31:03,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:31:03,646 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 13:31:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,647 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:31:03,647 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:31:03,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:31:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:31:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 13:31:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 13:31:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 13:31:03,653 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 13:31:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,653 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 13:31:03,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:31:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 13:31:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 13:31:03,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,655 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 13:31:03,655 INFO L415 AbstractCegarLoop]: === Iteration 55 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 13:31:03,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,888 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 13:31:03,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:31:03,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:31:03,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:31:03,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:31:03,891 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 13:31:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,953 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 13:31:03,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:31:03,953 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 13:31:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,954 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:31:03,955 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 13:31:03,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:31:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 13:31:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 13:31:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 13:31:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 13:31:03,961 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 13:31:03,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,961 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 13:31:03,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:31:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 13:31:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 13:31:03,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,963 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 13:31:03,963 INFO L415 AbstractCegarLoop]: === Iteration 56 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 13:31:03,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,201 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 13:31:04,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:31:04,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:31:04,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:31:04,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:31:04,204 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 13:31:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,265 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 13:31:04,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:31:04,266 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 13:31:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,267 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:31:04,267 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 13:31:04,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:31:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 13:31:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 13:31:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 13:31:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 13:31:04,273 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 13:31:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,273 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 13:31:04,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:31:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 13:31:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 13:31:04,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,275 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 13:31:04,275 INFO L415 AbstractCegarLoop]: === Iteration 57 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 13:31:04,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,526 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 13:31:04,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:31:04,527 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:31:04,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:31:04,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:31:04,529 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 13:31:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,605 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 13:31:04,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:31:04,605 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 13:31:04,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,606 INFO L225 Difference]: With dead ends: 119 [2018-07-25 13:31:04,607 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:31:04,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:31:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:31:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 13:31:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 13:31:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 13:31:04,613 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 13:31:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,613 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 13:31:04,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:31:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 13:31:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 13:31:04,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,615 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 13:31:04,615 INFO L415 AbstractCegarLoop]: === Iteration 58 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 13:31:04,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,871 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 13:31:04,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:31:04,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:31:04,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:31:04,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:31:04,874 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 13:31:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,937 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 13:31:04,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:31:04,937 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 13:31:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,938 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:31:04,938 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 13:31:04,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:31:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 13:31:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 13:31:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 13:31:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 13:31:04,945 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 13:31:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,945 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 13:31:04,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:31:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 13:31:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 13:31:04,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,947 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 13:31:04,947 INFO L415 AbstractCegarLoop]: === Iteration 59 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 13:31:04,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,230 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 13:31:05,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:31:05,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:31:05,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:31:05,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:31:05,234 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 13:31:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,314 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 13:31:05,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:31:05,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 13:31:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,316 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:31:05,316 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 13:31:05,317 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 13:31:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 13:31:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 13:31:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 13:31:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 13:31:05,322 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 13:31:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,323 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 13:31:05,323 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:31:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 13:31:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 13:31:05,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,324 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 13:31:05,325 INFO L415 AbstractCegarLoop]: === Iteration 60 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,325 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 13:31:05,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,656 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 13:31:05,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:31:05,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:31:05,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:31:05,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:31:05,660 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 13:31:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,718 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 13:31:05,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:31:05,719 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 13:31:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,720 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:31:05,720 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:31:05,722 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 13:31:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:31:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 13:31:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 13:31:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 13:31:05,728 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 13:31:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,728 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 13:31:05,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:31:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 13:31:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 13:31:05,730 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,730 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 13:31:05,731 INFO L415 AbstractCegarLoop]: === Iteration 61 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 13:31:05,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,092 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 13:31:06,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:31:06,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:31:06,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:31:06,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:31:06,095 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 13:31:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,183 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 13:31:06,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:31:06,183 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 13:31:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,184 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:31:06,184 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 13:31:06,185 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 13:31:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 13:31:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 13:31:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 13:31:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 13:31:06,190 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 13:31:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,190 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 13:31:06,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:31:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 13:31:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 13:31:06,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,192 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 13:31:06,192 INFO L415 AbstractCegarLoop]: === Iteration 62 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 13:31:06,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,457 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 13:31:06,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:31:06,458 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:31:06,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:31:06,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:31:06,460 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 13:31:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,516 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 13:31:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:31:06,516 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 13:31:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,517 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:31:06,518 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 13:31:06,519 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:31:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 13:31:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 13:31:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 13:31:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 13:31:06,524 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 13:31:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,524 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 13:31:06,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:31:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 13:31:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 13:31:06,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,526 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 13:31:06,526 INFO L415 AbstractCegarLoop]: === Iteration 63 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 13:31:06,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,775 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 13:31:06,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:31:06,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:31:06,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:31:06,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:31:06,780 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 13:31:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,862 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 13:31:06,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:31:06,862 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 13:31:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,863 INFO L225 Difference]: With dead ends: 131 [2018-07-25 13:31:06,863 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:31:06,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:31:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:31:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 13:31:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 13:31:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 13:31:06,870 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 13:31:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,870 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 13:31:06,870 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:31:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 13:31:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 13:31:06,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,872 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 13:31:06,872 INFO L415 AbstractCegarLoop]: === Iteration 64 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 13:31:06,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,133 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 13:31:07,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:31:07,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:31:07,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:31:07,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:31:07,137 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 13:31:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,198 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 13:31:07,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:31:07,199 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 13:31:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,200 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:31:07,200 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 13:31:07,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:31:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 13:31:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 13:31:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 13:31:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 13:31:07,208 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 13:31:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,209 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 13:31:07,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:31:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 13:31:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 13:31:07,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,210 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 13:31:07,211 INFO L415 AbstractCegarLoop]: === Iteration 65 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 13:31:07,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,481 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 13:31:07,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:31:07,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:31:07,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:31:07,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:31:07,484 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 13:31:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,569 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 13:31:07,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:31:07,570 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 13:31:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,571 INFO L225 Difference]: With dead ends: 135 [2018-07-25 13:31:07,571 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 13:31:07,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:31:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 13:31:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 13:31:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 13:31:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 13:31:07,582 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 13:31:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,582 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 13:31:07,583 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:31:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 13:31:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 13:31:07,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,584 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 13:31:07,585 INFO L415 AbstractCegarLoop]: === Iteration 66 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 13:31:07,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,869 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 13:31:07,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:31:07,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:31:07,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:31:07,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:31:07,872 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 13:31:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,965 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 13:31:07,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:31:07,965 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 13:31:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,966 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:31:07,967 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:31:07,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:31:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:31:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 13:31:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 13:31:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 13:31:07,972 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 13:31:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,973 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 13:31:07,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:31:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 13:31:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 13:31:07,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,975 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 13:31:07,975 INFO L415 AbstractCegarLoop]: === Iteration 67 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,975 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 13:31:07,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,247 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 13:31:08,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:31:08,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:31:08,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:31:08,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:31:08,249 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 13:31:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,324 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 13:31:08,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:31:08,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 13:31:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,326 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:31:08,326 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 13:31:08,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:31:08,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 13:31:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 13:31:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 13:31:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 13:31:08,332 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 13:31:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,332 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 13:31:08,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:31:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 13:31:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 13:31:08,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,334 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 13:31:08,334 INFO L415 AbstractCegarLoop]: === Iteration 68 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 13:31:08,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,628 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 13:31:08,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:31:08,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:31:08,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:31:08,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:31:08,630 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 13:31:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,689 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 13:31:08,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:31:08,689 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 13:31:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,690 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:31:08,690 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 13:31:08,691 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 13:31:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 13:31:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 13:31:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 13:31:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 13:31:08,696 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 13:31:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,696 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 13:31:08,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:31:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 13:31:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 13:31:08,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,698 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 13:31:08,698 INFO L415 AbstractCegarLoop]: === Iteration 69 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 13:31:08,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:08,967 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 13:31:08,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:08,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:31:08,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:31:08,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:31:08,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:31:08,970 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 13:31:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,026 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 13:31:09,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:31:09,026 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 13:31:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,027 INFO L225 Difference]: With dead ends: 143 [2018-07-25 13:31:09,027 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:31:09,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:31:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:31:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 13:31:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 13:31:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 13:31:09,033 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 13:31:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,033 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 13:31:09,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:31:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 13:31:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 13:31:09,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,035 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 13:31:09,035 INFO L415 AbstractCegarLoop]: === Iteration 70 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 13:31:09,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,317 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 13:31:09,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:31:09,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:31:09,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:31:09,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:31:09,320 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 13:31:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,379 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 13:31:09,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:31:09,379 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 13:31:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,380 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:31:09,380 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 13:31:09,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:31:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 13:31:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 13:31:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 13:31:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 13:31:09,387 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 13:31:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,387 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 13:31:09,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:31:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 13:31:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 13:31:09,388 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,389 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 13:31:09,389 INFO L415 AbstractCegarLoop]: === Iteration 71 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 13:31:09,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,681 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 13:31:09,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:31:09,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:31:09,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:31:09,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:31:09,684 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 13:31:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,758 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 13:31:09,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:31:09,758 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 13:31:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,759 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:31:09,760 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 13:31:09,761 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 13:31:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 13:31:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 13:31:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 13:31:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 13:31:09,766 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 13:31:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,767 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 13:31:09,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:31:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 13:31:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 13:31:09,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,769 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 13:31:09,769 INFO L415 AbstractCegarLoop]: === Iteration 72 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 13:31:09,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,071 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 13:31:10,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:31:10,072 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:31:10,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:31:10,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:31:10,074 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 13:31:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,177 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 13:31:10,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:31:10,177 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 13:31:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,178 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:31:10,178 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:31:10,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:31:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:31:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 13:31:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 13:31:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 13:31:10,185 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 13:31:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,185 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 13:31:10,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:31:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 13:31:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 13:31:10,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,187 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 13:31:10,187 INFO L415 AbstractCegarLoop]: === Iteration 73 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 13:31:10,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,483 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 13:31:10,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:31:10,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:31:10,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:31:10,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:31:10,486 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 13:31:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,619 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 13:31:10,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:31:10,619 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 13:31:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,621 INFO L225 Difference]: With dead ends: 151 [2018-07-25 13:31:10,621 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 13:31:10,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:31:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 13:31:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 13:31:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 13:31:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 13:31:10,629 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 13:31:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,629 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 13:31:10,629 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:31:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 13:31:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 13:31:10,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,631 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 13:31:10,631 INFO L415 AbstractCegarLoop]: === Iteration 74 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 13:31:10,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,042 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 13:31:11,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:31:11,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:31:11,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:31:11,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:31:11,046 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 13:31:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:11,172 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 13:31:11,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:31:11,172 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 13:31:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:11,173 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:31:11,174 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 13:31:11,175 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 13:31:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 13:31:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 13:31:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 13:31:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 13:31:11,181 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 13:31:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:11,181 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 13:31:11,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:31:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 13:31:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 13:31:11,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:11,183 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 13:31:11,184 INFO L415 AbstractCegarLoop]: === Iteration 75 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 13:31:11,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,528 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 13:31:11,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:31:11,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:31:11,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:31:11,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:31:11,531 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 13:31:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:11,612 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 13:31:11,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:31:11,612 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 13:31:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:11,614 INFO L225 Difference]: With dead ends: 155 [2018-07-25 13:31:11,614 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:31:11,614 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 13:31:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:31:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 13:31:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 13:31:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 13:31:11,620 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 13:31:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:11,620 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 13:31:11,620 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:31:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 13:31:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 13:31:11,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:11,622 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 13:31:11,623 INFO L415 AbstractCegarLoop]: === Iteration 76 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:11,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 13:31:11,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:11,929 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 13:31:11,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:11,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:31:11,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:31:11,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:31:11,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:31:11,932 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 13:31:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,070 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 13:31:12,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:31:12,070 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 13:31:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,071 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:31:12,072 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 13:31:12,073 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 13:31:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 13:31:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 13:31:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 13:31:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 13:31:12,079 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 13:31:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,080 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 13:31:12,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:31:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 13:31:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 13:31:12,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,082 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 13:31:12,082 INFO L415 AbstractCegarLoop]: === Iteration 77 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,082 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 13:31:12,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,396 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 13:31:12,396 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:31:12,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:31:12,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:31:12,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:31:12,399 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 13:31:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,477 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 13:31:12,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:31:12,477 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 13:31:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,478 INFO L225 Difference]: With dead ends: 159 [2018-07-25 13:31:12,478 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 13:31:12,479 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 13:31:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 13:31:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 13:31:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 13:31:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 13:31:12,485 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 13:31:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,485 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 13:31:12,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:31:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 13:31:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 13:31:12,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,487 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 13:31:12,487 INFO L415 AbstractCegarLoop]: === Iteration 78 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,488 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 13:31:12,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,803 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 13:31:12,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:31:12,804 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:31:12,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:31:12,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:31:12,806 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 13:31:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,931 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 13:31:12,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:31:12,931 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 13:31:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,933 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:31:12,933 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:31:12,934 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 13:31:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:31:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 13:31:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 13:31:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 13:31:12,942 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 13:31:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,942 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 13:31:12,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:31:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 13:31:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 13:31:12,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,944 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 13:31:12,944 INFO L415 AbstractCegarLoop]: === Iteration 79 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 13:31:12,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,248 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 13:31:13,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:31:13,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:31:13,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:31:13,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:13,250 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 13:31:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:13,368 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 13:31:13,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:31:13,368 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 13:31:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:13,370 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:31:13,370 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 13:31:13,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 13:31:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 13:31:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 13:31:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 13:31:13,376 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 13:31:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,376 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 13:31:13,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:31:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 13:31:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 13:31:13,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,378 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 13:31:13,378 INFO L415 AbstractCegarLoop]: === Iteration 80 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 13:31:13,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,700 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 13:31:13,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:31:13,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:31:13,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:31:13,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:13,704 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 13:31:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:13,772 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 13:31:13,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:31:13,772 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 13:31:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:13,774 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:31:13,774 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 13:31:13,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 13:31:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 13:31:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 13:31:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 13:31:13,780 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 13:31:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,780 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 13:31:13,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:31:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 13:31:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 13:31:13,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,782 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 13:31:13,782 INFO L415 AbstractCegarLoop]: === Iteration 81 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 13:31:13,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:14,094 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 13:31:14,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:14,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:31:14,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:31:14,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:31:14,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:14,097 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 13:31:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,218 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 13:31:14,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:31:14,218 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 13:31:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,219 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:31:14,220 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:31:14,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:31:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 13:31:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 13:31:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 13:31:14,225 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 13:31:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:14,226 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 13:31:14,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:31:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 13:31:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 13:31:14,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:14,228 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 13:31:14,228 INFO L415 AbstractCegarLoop]: === Iteration 82 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 13:31:14,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:14,547 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 13:31:14,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:14,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:31:14,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:31:14,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:31:14,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:31:14,550 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 13:31:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,689 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 13:31:14,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:31:14,689 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 13:31:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,690 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:31:14,691 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 13:31:14,691 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 13:31:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 13:31:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 13:31:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 13:31:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 13:31:14,696 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 13:31:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:14,697 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 13:31:14,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:31:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 13:31:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 13:31:14,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:14,699 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 13:31:14,699 INFO L415 AbstractCegarLoop]: === Iteration 83 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:14,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 13:31:14,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:15,016 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 13:31:15,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:15,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:31:15,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:31:15,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:31:15,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:15,019 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 13:31:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:15,180 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 13:31:15,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:31:15,181 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 13:31:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:15,182 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:31:15,182 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 13:31:15,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 13:31:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 13:31:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 13:31:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 13:31:15,188 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 13:31:15,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,188 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 13:31:15,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:31:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 13:31:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 13:31:15,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,190 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 13:31:15,191 INFO L415 AbstractCegarLoop]: === Iteration 84 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:15,191 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 13:31:15,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:15,528 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 13:31:15,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:15,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:31:15,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:31:15,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:31:15,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:31:15,531 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 13:31:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:15,683 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 13:31:15,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:31:15,684 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 13:31:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:15,685 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:31:15,685 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:31:15,686 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 13:31:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:31:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 13:31:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 13:31:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 13:31:15,691 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 13:31:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,691 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 13:31:15,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:31:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 13:31:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 13:31:15,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,693 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 13:31:15,693 INFO L415 AbstractCegarLoop]: === Iteration 85 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 13:31:15,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,070 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 13:31:16,070 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 [85] total 85 [2018-07-25 13:31:16,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:31:16,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:31:16,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:31:16,073 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 13:31:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,273 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 13:31:16,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:31:16,273 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 13:31:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,275 INFO L225 Difference]: With dead ends: 175 [2018-07-25 13:31:16,275 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 13:31:16,276 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 13:31:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 13:31:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 13:31:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 13:31:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 13:31:16,283 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 13:31:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:16,283 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 13:31:16,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:31:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 13:31:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 13:31:16,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:16,286 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 13:31:16,286 INFO L415 AbstractCegarLoop]: === Iteration 86 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 13:31:16,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,766 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 13:31:16,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:16,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:31:16,767 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:31:16,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:31:16,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:16,770 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 13:31:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,941 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 13:31:16,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:31:16,942 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 13:31:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,944 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:31:16,944 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 13:31:16,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 13:31:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 13:31:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 13:31:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 13:31:16,952 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 13:31:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:16,953 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 13:31:16,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:31:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 13:31:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 13:31:16,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:16,956 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 13:31:16,957 INFO L415 AbstractCegarLoop]: === Iteration 87 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 13:31:16,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:17,482 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 13:31:17,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:17,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:31:17,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:31:17,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:31:17,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:17,484 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 13:31:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:17,573 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 13:31:17,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:31:17,573 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 13:31:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:17,575 INFO L225 Difference]: With dead ends: 179 [2018-07-25 13:31:17,575 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:31:17,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:31:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 13:31:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 13:31:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 13:31:17,582 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 13:31:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:17,582 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 13:31:17,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:31:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 13:31:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 13:31:17,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:17,585 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 13:31:17,585 INFO L415 AbstractCegarLoop]: === Iteration 88 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 13:31:17,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:17,947 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 13:31:17,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:17,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:31:17,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:31:17,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:31:17,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:31:17,950 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 13:31:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:18,092 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 13:31:18,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:31:18,092 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 13:31:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:18,093 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:31:18,093 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 13:31:18,094 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 13:31:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 13:31:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 13:31:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 13:31:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 13:31:18,099 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 13:31:18,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:18,099 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 13:31:18,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:31:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 13:31:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 13:31:18,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:18,101 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 13:31:18,102 INFO L415 AbstractCegarLoop]: === Iteration 89 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:18,102 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 13:31:18,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:18,488 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 13:31:18,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:18,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:31:18,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:31:18,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:31:18,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:31:18,491 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 13:31:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:18,709 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 13:31:18,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:31:18,709 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 13:31:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:18,711 INFO L225 Difference]: With dead ends: 183 [2018-07-25 13:31:18,711 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 13:31:18,712 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 13:31:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 13:31:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 13:31:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 13:31:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 13:31:18,717 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 13:31:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:18,717 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 13:31:18,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:31:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 13:31:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 13:31:18,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:18,719 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 13:31:18,719 INFO L415 AbstractCegarLoop]: === Iteration 90 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:18,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 13:31:18,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,101 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 13:31:19,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:31:19,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:31:19,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:31:19,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:31:19,104 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 13:31:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,187 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 13:31:19,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:31:19,188 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 13:31:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,189 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:31:19,189 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:31:19,190 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 13:31:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:31:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 13:31:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 13:31:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 13:31:19,199 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 13:31:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,201 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 13:31:19,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:31:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 13:31:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 13:31:19,204 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,205 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 13:31:19,205 INFO L415 AbstractCegarLoop]: === Iteration 91 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 13:31:19,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,595 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 13:31:19,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:31:19,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:31:19,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:31:19,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:31:19,597 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 13:31:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,771 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 13:31:19,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:31:19,771 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 13:31:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,772 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:31:19,772 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 13:31:19,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:31:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 13:31:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 13:31:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 13:31:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 13:31:19,778 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 13:31:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,778 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 13:31:19,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:31:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 13:31:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 13:31:19,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,779 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 13:31:19,780 INFO L415 AbstractCegarLoop]: === Iteration 92 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,780 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 13:31:19,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:20,137 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 13:31:20,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:20,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:31:20,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:31:20,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:31:20,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:31:20,140 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 13:31:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,229 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 13:31:20,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:31:20,229 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 13:31:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,230 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:31:20,231 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 13:31:20,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:31:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 13:31:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 13:31:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 13:31:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 13:31:20,237 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 13:31:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,237 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 13:31:20,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:31:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 13:31:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 13:31:20,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,238 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 13:31:20,239 INFO L415 AbstractCegarLoop]: === Iteration 93 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 13:31:20,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:20,637 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 13:31:20,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:20,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:31:20,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:31:20,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:31:20,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:31:20,642 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 13:31:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,890 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 13:31:20,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:31:20,890 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 13:31:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,892 INFO L225 Difference]: With dead ends: 191 [2018-07-25 13:31:20,892 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:31:20,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:31:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:31:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 13:31:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 13:31:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 13:31:20,898 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 13:31:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,899 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 13:31:20,899 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:31:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 13:31:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 13:31:20,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,900 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 13:31:20,900 INFO L415 AbstractCegarLoop]: === Iteration 94 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 13:31:20,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:21,354 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 13:31:21,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:21,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:31:21,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:31:21,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:31:21,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:31:21,357 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 13:31:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:21,626 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 13:31:21,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:31:21,626 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 13:31:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:21,628 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:31:21,628 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 13:31:21,629 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 13:31:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 13:31:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 13:31:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 13:31:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 13:31:21,637 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 13:31:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:21,638 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 13:31:21,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:31:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 13:31:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 13:31:21,639 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:21,639 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 13:31:21,639 INFO L415 AbstractCegarLoop]: === Iteration 95 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 13:31:21,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:22,095 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 13:31:22,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:22,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:31:22,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:31:22,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:31:22,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:31:22,099 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 13:31:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:22,241 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 13:31:22,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:31:22,242 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 13:31:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:22,243 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:31:22,243 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 13:31:22,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:31:22,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 13:31:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 13:31:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 13:31:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 13:31:22,251 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 13:31:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:22,252 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 13:31:22,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:31:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 13:31:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 13:31:22,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:22,253 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 13:31:22,254 INFO L415 AbstractCegarLoop]: === Iteration 96 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:22,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 13:31:22,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:22,629 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 13:31:22,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:22,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:31:22,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:31:22,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:31:22,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:31:22,632 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 13:31:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:22,703 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 13:31:22,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:31:22,704 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 13:31:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:22,705 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:31:22,705 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:31:22,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:31:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:31:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 13:31:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 13:31:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 13:31:22,713 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 13:31:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:22,713 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 13:31:22,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:31:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 13:31:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 13:31:22,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:22,714 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 13:31:22,715 INFO L415 AbstractCegarLoop]: === Iteration 97 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 13:31:22,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:23,070 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 13:31:23,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:23,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:31:23,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:31:23,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:31:23,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:31:23,072 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 13:31:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,154 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 13:31:23,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:31:23,154 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 13:31:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,155 INFO L225 Difference]: With dead ends: 199 [2018-07-25 13:31:23,155 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 13:31:23,156 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 13:31:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 13:31:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 13:31:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 13:31:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 13:31:23,162 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 13:31:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:23,162 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 13:31:23,162 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:31:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 13:31:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 13:31:23,163 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:23,164 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 13:31:23,164 INFO L415 AbstractCegarLoop]: === Iteration 98 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:23,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 13:31:23,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:23,680 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 13:31:23,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:23,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:31:23,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:31:23,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:31:23,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:31:23,682 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 13:31:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,758 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 13:31:23,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:31:23,758 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 13:31:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,759 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:31:23,759 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 13:31:23,760 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:31:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 13:31:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 13:31:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 13:31:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 13:31:23,765 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [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 200 states and 200 transitions. [2018-07-25 13:31:23,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:31:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 13:31:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 13:31:23,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:23,767 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 13:31:23,767 INFO L415 AbstractCegarLoop]: === Iteration 99 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 13:31:23,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:24,095 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 13:31:24,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:24,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:31:24,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:31:24,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:31:24,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:31:24,097 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 13:31:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:24,243 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 13:31:24,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:31:24,243 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 13:31:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:24,245 INFO L225 Difference]: With dead ends: 203 [2018-07-25 13:31:24,245 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:31:24,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:31:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:31:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 13:31:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 13:31:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 13:31:24,251 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 13:31:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:24,252 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 13:31:24,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:31:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 13:31:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 13:31:24,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:24,253 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 13:31:24,253 INFO L415 AbstractCegarLoop]: === Iteration 100 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 13:31:24,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:24,627 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 13:31:24,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:24,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:31:24,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:31:24,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:31:24,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:31:24,630 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 13:31:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:24,723 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 13:31:24,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:31:24,723 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 13:31:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:24,726 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:31:24,726 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 13:31:24,727 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:31:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 13:31:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 13:31:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 13:31:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 13:31:24,733 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 13:31:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:24,733 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 13:31:24,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:31:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 13:31:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 13:31:24,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:24,735 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 13:31:24,735 INFO L415 AbstractCegarLoop]: === Iteration 101 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 13:31:24,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:25,058 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 13:31:25,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:25,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:31:25,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:31:25,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:31:25,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:31:25,061 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 13:31:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:25,189 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 13:31:25,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:31:25,190 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 13:31:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:25,191 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:31:25,191 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 13:31:25,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:31:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 13:31:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 13:31:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 13:31:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 13:31:25,198 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 13:31:25,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:25,198 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 13:31:25,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:31:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 13:31:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 13:31:25,200 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:25,200 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 13:31:25,200 INFO L415 AbstractCegarLoop]: === Iteration 102 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 13:31:25,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:25,611 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 13:31:25,611 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:25,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:31:25,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:31:25,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:31:25,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:31:25,614 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 13:31:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:25,788 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 13:31:25,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:31:25,789 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 13:31:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:25,790 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:31:25,790 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:31:25,791 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 13:31:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:31:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 13:31:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 13:31:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 13:31:25,796 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 13:31:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:25,797 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 13:31:25,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:31:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 13:31:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 13:31:25,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:25,798 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 13:31:25,798 INFO L415 AbstractCegarLoop]: === Iteration 103 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:25,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 13:31:25,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:26,164 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 13:31:26,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:26,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:31:26,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:31:26,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:31:26,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:31:26,166 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 13:31:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:26,273 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 13:31:26,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:31:26,273 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 13:31:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:26,273 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:31:26,274 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 13:31:26,274 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 13:31:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 13:31:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 13:31:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 13:31:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 13:31:26,277 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 13:31:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:26,278 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 13:31:26,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:31:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 13:31:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 13:31:26,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:26,279 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 13:31:26,279 INFO L415 AbstractCegarLoop]: === Iteration 104 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:26,279 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 13:31:26,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:26,568 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 13:31:26,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:26,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:31:26,569 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:31:26,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:31:26,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:31:26,571 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 13:31:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:26,837 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 13:31:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:31:26,837 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 13:31:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:26,838 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:31:26,838 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 13:31:26,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:31:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 13:31:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 13:31:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 13:31:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 13:31:26,845 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 13:31:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:26,845 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 13:31:26,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:31:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 13:31:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 13:31:26,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:26,846 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 13:31:26,847 INFO L415 AbstractCegarLoop]: === Iteration 105 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 13:31:26,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:27,310 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 13:31:27,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:27,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:31:27,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:31:27,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:31:27,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:31:27,313 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 13:31:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:27,486 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 13:31:27,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:31:27,486 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 13:31:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:27,487 INFO L225 Difference]: With dead ends: 215 [2018-07-25 13:31:27,487 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:31:27,488 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 13:31:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:31:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 13:31:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 13:31:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 13:31:27,492 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 13:31:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,492 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 13:31:27,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:31:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 13:31:27,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 13:31:27,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,493 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 13:31:27,494 INFO L415 AbstractCegarLoop]: === Iteration 106 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,494 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 13:31:27,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:27,859 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 13:31:27,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:27,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:31:27,860 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:31:27,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:31:27,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:31:27,861 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 13:31:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:28,000 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 13:31:28,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:31:28,000 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 13:31:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:28,001 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:31:28,001 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 13:31:28,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:31:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 13:31:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 13:31:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 13:31:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 13:31:28,007 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 13:31:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:28,007 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 13:31:28,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:31:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 13:31:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 13:31:28,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:28,008 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 13:31:28,009 INFO L415 AbstractCegarLoop]: === Iteration 107 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 13:31:28,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:28,373 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 13:31:28,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:28,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:31:28,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:31:28,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:31:28,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:31:28,375 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 13:31:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:28,477 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 13:31:28,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:31:28,477 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 13:31:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:28,478 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:31:28,478 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 13:31:28,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:31:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 13:31:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 13:31:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 13:31:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 13:31:28,483 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 13:31:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:28,484 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 13:31:28,484 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:31:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 13:31:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 13:31:28,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:28,485 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 13:31:28,485 INFO L415 AbstractCegarLoop]: === Iteration 108 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 13:31:28,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:28,975 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 13:31:28,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:28,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:31:28,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:31:28,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:31:28,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:31:28,977 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 13:31:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:29,196 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 13:31:29,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:31:29,196 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 13:31:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:29,196 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:31:29,197 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:31:29,197 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 13:31:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:31:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 13:31:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 13:31:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 13:31:29,201 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 13:31:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:29,201 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 13:31:29,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:31:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 13:31:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 13:31:29,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:29,202 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 13:31:29,202 INFO L415 AbstractCegarLoop]: === Iteration 109 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:29,203 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 13:31:29,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:29,533 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 13:31:29,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:29,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:31:29,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:31:29,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:31:29,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:31:29,536 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 13:31:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:29,750 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 13:31:29,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:31:29,750 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 13:31:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:29,751 INFO L225 Difference]: With dead ends: 223 [2018-07-25 13:31:29,751 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 13:31:29,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:31:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 13:31:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 13:31:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 13:31:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 13:31:29,757 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 13:31:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:29,757 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 13:31:29,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:31:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 13:31:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 13:31:29,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:29,759 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 13:31:29,759 INFO L415 AbstractCegarLoop]: === Iteration 110 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:29,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 13:31:29,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:30,101 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 13:31:30,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:30,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:31:30,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:31:30,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:31:30,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:31:30,103 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 13:31:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:30,247 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 13:31:30,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:31:30,247 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 13:31:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:30,248 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:31:30,248 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 13:31:30,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:31:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 13:31:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 13:31:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 13:31:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 13:31:30,252 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 13:31:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:30,252 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 13:31:30,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:31:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 13:31:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 13:31:30,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:30,253 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 13:31:30,254 INFO L415 AbstractCegarLoop]: === Iteration 111 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:30,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 13:31:30,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:30,609 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 13:31:30,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:30,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:31:30,609 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:31:30,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:31:30,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:31:30,611 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 13:31:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:30,757 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 13:31:30,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:31:30,757 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 13:31:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:30,757 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:31:30,758 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:31:30,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:31:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:31:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 13:31:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 13:31:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 13:31:30,763 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 13:31:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:30,763 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 13:31:30,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:31:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 13:31:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 13:31:30,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:30,765 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 13:31:30,765 INFO L415 AbstractCegarLoop]: === Iteration 112 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 13:31:30,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:31,170 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 13:31:31,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:31,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:31:31,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:31:31,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:31:31,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:31:31,173 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 13:31:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,372 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 13:31:31,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:31:31,372 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 13:31:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,373 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:31:31,373 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 13:31:31,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:31:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 13:31:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 13:31:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 13:31:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 13:31:31,378 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 13:31:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,379 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 13:31:31,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:31:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 13:31:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 13:31:31,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,380 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 13:31:31,380 INFO L415 AbstractCegarLoop]: === Iteration 113 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 13:31:31,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:31,824 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 13:31:31,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:31,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:31:31,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:31:31,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:31:31,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:31:31,826 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 13:31:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,977 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 13:31:31,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:31:31,977 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 13:31:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,978 INFO L225 Difference]: With dead ends: 231 [2018-07-25 13:31:31,978 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 13:31:31,979 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 13:31:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 13:31:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 13:31:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 13:31:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 13:31:31,984 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 13:31:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,984 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 13:31:31,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:31:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 13:31:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 13:31:31,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,986 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 13:31:31,987 INFO L415 AbstractCegarLoop]: === Iteration 114 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 13:31:31,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:32,332 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 13:31:32,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:32,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:31:32,333 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:31:32,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:31:32,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:31:32,335 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 13:31:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:32,534 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 13:31:32,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:31:32,535 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 13:31:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:32,535 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:31:32,536 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:31:32,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:31:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:31:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 13:31:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 13:31:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 13:31:32,541 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 13:31:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:32,541 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 13:31:32,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:31:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 13:31:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 13:31:32,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:32,543 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 13:31:32,543 INFO L415 AbstractCegarLoop]: === Iteration 115 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:32,543 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 13:31:32,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:32,951 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 13:31:32,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:32,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:31:32,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:31:32,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:31:32,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:31:32,955 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 13:31:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:33,174 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 13:31:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:31:33,174 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 13:31:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:33,175 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:31:33,175 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 13:31:33,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:31:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 13:31:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 13:31:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 13:31:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 13:31:33,180 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 13:31:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:33,180 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 13:31:33,180 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:31:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 13:31:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 13:31:33,181 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:33,182 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 13:31:33,182 INFO L415 AbstractCegarLoop]: === Iteration 116 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 13:31:33,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:33,546 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 13:31:33,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:33,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:31:33,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:31:33,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:31:33,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:31:33,548 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 13:31:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:33,799 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 13:31:33,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:31:33,799 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 13:31:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:33,800 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:31:33,800 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 13:31:33,801 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:31:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 13:31:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 13:31:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 13:31:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 13:31:33,805 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 13:31:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:33,806 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 13:31:33,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:31:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 13:31:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 13:31:33,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:33,807 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 13:31:33,807 INFO L415 AbstractCegarLoop]: === Iteration 117 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:33,807 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 13:31:33,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:34,272 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 13:31:34,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:34,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:31:34,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:31:34,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:31:34,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:31:34,275 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 13:31:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:34,440 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 13:31:34,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:31:34,440 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 13:31:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:34,441 INFO L225 Difference]: With dead ends: 239 [2018-07-25 13:31:34,441 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:31:34,442 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:31:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:31:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 13:31:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 13:31:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 13:31:34,448 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 13:31:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:34,449 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 13:31:34,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:31:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 13:31:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 13:31:34,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:34,450 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 13:31:34,451 INFO L415 AbstractCegarLoop]: === Iteration 118 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:34,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 13:31:34,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:34,896 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 13:31:34,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:34,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:31:34,897 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:31:34,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:31:34,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:31:34,899 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 13:31:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,078 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 13:31:35,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:31:35,079 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 13:31:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,079 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:31:35,079 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 13:31:35,080 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:31:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 13:31:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 13:31:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 13:31:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 13:31:35,083 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 13:31:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,083 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 13:31:35,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:31:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 13:31:35,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 13:31:35,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,084 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 13:31:35,084 INFO L415 AbstractCegarLoop]: === Iteration 119 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 13:31:35,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:35,604 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 13:31:35,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:35,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:31:35,605 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:31:35,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:31:35,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:31:35,607 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 13:31:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,879 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 13:31:35,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:31:35,879 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 13:31:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,880 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:31:35,880 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 13:31:35,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:31:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 13:31:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 13:31:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 13:31:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 13:31:35,885 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 13:31:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,885 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 13:31:35,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:31:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 13:31:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 13:31:35,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,887 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 13:31:35,887 INFO L415 AbstractCegarLoop]: === Iteration 120 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,887 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 13:31:35,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:36,296 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 13:31:36,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:36,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:31:36,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:31:36,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:31:36,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:31:36,298 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 13:31:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:36,518 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 13:31:36,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:31:36,518 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 13:31:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:36,519 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:31:36,519 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:31:36,519 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:31:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:31:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 13:31:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 13:31:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 13:31:36,522 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 13:31:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:36,523 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 13:31:36,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:31:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 13:31:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 13:31:36,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:36,524 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 13:31:36,524 INFO L415 AbstractCegarLoop]: === Iteration 121 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 13:31:36,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:36,927 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 13:31:36,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:36,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:31:36,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:31:36,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:31:36,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:31:36,930 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 13:31:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:37,050 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 13:31:37,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:31:37,051 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 13:31:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:37,051 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:31:37,051 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 13:31:37,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:31:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 13:31:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 13:31:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 13:31:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 13:31:37,055 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 13:31:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:37,055 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 13:31:37,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:31:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 13:31:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 13:31:37,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:37,057 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 13:31:37,057 INFO L415 AbstractCegarLoop]: === Iteration 122 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 13:31:37,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:37,512 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 13:31:37,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:37,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:31:37,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:31:37,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:31:37,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:31:37,514 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 13:31:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:37,796 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 13:31:37,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:31:37,796 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 13:31:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:37,797 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:31:37,797 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 13:31:37,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:31:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 13:31:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 13:31:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 13:31:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 13:31:37,802 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 13:31:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:37,802 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 13:31:37,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:31:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 13:31:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 13:31:37,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:37,803 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 13:31:37,804 INFO L415 AbstractCegarLoop]: === Iteration 123 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:37,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 13:31:37,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:38,218 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 13:31:38,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:38,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:31:38,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:31:38,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:31:38,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:31:38,221 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 13:31:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:38,710 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 13:31:38,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:31:38,710 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 13:31:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:38,711 INFO L225 Difference]: With dead ends: 251 [2018-07-25 13:31:38,711 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:31:38,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:31:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:31:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 13:31:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 13:31:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 13:31:38,717 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 13:31:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:38,718 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 13:31:38,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:31:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 13:31:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 13:31:38,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:38,719 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 13:31:38,720 INFO L415 AbstractCegarLoop]: === Iteration 124 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 13:31:38,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:39,450 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 13:31:39,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:39,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:31:39,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:31:39,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:31:39,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:31:39,454 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 13:31:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:39,586 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 13:31:39,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:31:39,586 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 13:31:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:39,586 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:31:39,586 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 13:31:39,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:31:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 13:31:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 13:31:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 13:31:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 13:31:39,590 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 13:31:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:39,590 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 13:31:39,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:31:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 13:31:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 13:31:39,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:39,591 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 13:31:39,591 INFO L415 AbstractCegarLoop]: === Iteration 125 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 13:31:39,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,113 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 13:31:40,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:31:40,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:31:40,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:31:40,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:31:40,116 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 13:31:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:40,377 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 13:31:40,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:31:40,377 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 13:31:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:40,378 INFO L225 Difference]: With dead ends: 255 [2018-07-25 13:31:40,378 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 13:31:40,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:31:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 13:31:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 13:31:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 13:31:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 13:31:40,383 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 13:31:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:40,383 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 13:31:40,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:31:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 13:31:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 13:31:40,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:40,384 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 13:31:40,384 INFO L415 AbstractCegarLoop]: === Iteration 126 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 13:31:40,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,828 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 13:31:40,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:31:40,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:31:40,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:31:40,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:31:40,832 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 13:31:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:40,957 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 13:31:40,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:31:40,958 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 13:31:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:40,958 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:31:40,958 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:31:40,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:31:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:31:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 13:31:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 13:31:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 13:31:40,967 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 13:31:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:40,967 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 13:31:40,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:31:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 13:31:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 13:31:40,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:40,969 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 13:31:40,969 INFO L415 AbstractCegarLoop]: === Iteration 127 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:40,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 13:31:40,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:41,547 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 13:31:41,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:41,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:31:41,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:31:41,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:31:41,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:31:41,551 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 13:31:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:41,836 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 13:31:41,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:31:41,836 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 13:31:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:41,837 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:31:41,837 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 13:31:41,838 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:31:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 13:31:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 13:31:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 13:31:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 13:31:41,843 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 13:31:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:41,843 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 13:31:41,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:31:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 13:31:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 13:31:41,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:41,844 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 13:31:41,845 INFO L415 AbstractCegarLoop]: === Iteration 128 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 13:31:41,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:42,366 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 13:31:42,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:42,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:31:42,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:31:42,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:31:42,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:31:42,370 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 13:31:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:42,503 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 13:31:42,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:31:42,504 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 13:31:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:42,504 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:31:42,505 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 13:31:42,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:31:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 13:31:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 13:31:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 13:31:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 13:31:42,510 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 13:31:42,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:42,511 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 13:31:42,511 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:31:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 13:31:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 13:31:42,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:42,512 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 13:31:42,512 INFO L415 AbstractCegarLoop]: === Iteration 129 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 13:31:42,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:42,950 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 13:31:42,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:42,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:31:42,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 13:31:42,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 13:31:42,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:31:42,954 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 13:31:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:43,304 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 13:31:43,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:31:43,304 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 13:31:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:43,305 INFO L225 Difference]: With dead ends: 263 [2018-07-25 13:31:43,305 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:31:43,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:31:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:31:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 13:31:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 13:31:43,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 13:31:43,311 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 13:31:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:43,311 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 13:31:43,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 13:31:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 13:31:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 13:31:43,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:43,312 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 13:31:43,313 INFO L415 AbstractCegarLoop]: === Iteration 130 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:43,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 13:31:43,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:43,790 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 13:31:43,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:43,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 13:31:43,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:31:43,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:31:43,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:31:43,792 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 13:31:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:44,094 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 13:31:44,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:31:44,094 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 13:31:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:44,095 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:31:44,095 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 13:31:44,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:31:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 13:31:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 13:31:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 13:31:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 13:31:44,100 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 13:31:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:44,100 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 13:31:44,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:31:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 13:31:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 13:31:44,102 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:44,102 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 13:31:44,102 INFO L415 AbstractCegarLoop]: === Iteration 131 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 13:31:44,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:44,631 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 13:31:44,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:44,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:31:44,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:31:44,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:31:44,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:31:44,633 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 13:31:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:44,880 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 13:31:44,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:31:44,880 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 13:31:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:44,881 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:31:44,881 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 13:31:44,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:31:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 13:31:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 13:31:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 13:31:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 13:31:44,886 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 13:31:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:44,887 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 13:31:44,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:31:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 13:31:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 13:31:44,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:44,888 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 13:31:44,888 INFO L415 AbstractCegarLoop]: === Iteration 132 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 13:31:44,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:45,361 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 13:31:45,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:45,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:31:45,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:31:45,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:31:45,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:31:45,363 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 13:31:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:45,679 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 13:31:45,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:31:45,679 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 13:31:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:45,680 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:31:45,680 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:31:45,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:31:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:31:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 13:31:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 13:31:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 13:31:45,684 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 13:31:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:45,684 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 13:31:45,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:31:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 13:31:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 13:31:45,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:45,685 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 13:31:45,685 INFO L415 AbstractCegarLoop]: === Iteration 133 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:45,685 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 13:31:45,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:46,156 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 13:31:46,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:46,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:31:46,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 13:31:46,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 13:31:46,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:31:46,158 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 13:31:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:46,543 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 13:31:46,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:31:46,544 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 13:31:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:46,544 INFO L225 Difference]: With dead ends: 271 [2018-07-25 13:31:46,544 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 13:31:46,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:31:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 13:31:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 13:31:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 13:31:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 13:31:46,548 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 13:31:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:46,548 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 13:31:46,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 13:31:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 13:31:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 13:31:46,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:46,549 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 13:31:46,549 INFO L415 AbstractCegarLoop]: === Iteration 134 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 13:31:46,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:47,061 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 13:31:47,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:47,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 13:31:47,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:31:47,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:31:47,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:31:47,064 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 13:31:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:47,219 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 13:31:47,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:31:47,219 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 13:31:47,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:47,220 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:31:47,220 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 13:31:47,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:31:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 13:31:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 13:31:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 13:31:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 13:31:47,225 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 13:31:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:47,226 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 13:31:47,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:31:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 13:31:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 13:31:47,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:47,227 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 13:31:47,227 INFO L415 AbstractCegarLoop]: === Iteration 135 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 13:31:47,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:47,746 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 13:31:47,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:47,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:31:47,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:31:47,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:31:47,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:31:47,749 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 13:31:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:48,107 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 13:31:48,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:31:48,108 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 13:31:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:48,108 INFO L225 Difference]: With dead ends: 275 [2018-07-25 13:31:48,108 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:31:48,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:31:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:31:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 13:31:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 13:31:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 13:31:48,114 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 13:31:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:48,115 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 13:31:48,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:31:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 13:31:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 13:31:48,116 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:48,116 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 13:31:48,117 INFO L415 AbstractCegarLoop]: === Iteration 136 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 13:31:48,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:48,841 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 13:31:48,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:48,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:31:48,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:31:48,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:31:48,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:31:48,844 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 13:31:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:49,234 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 13:31:49,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:31:49,234 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 13:31:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:49,235 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:31:49,235 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 13:31:49,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:31:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 13:31:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 13:31:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 13:31:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 13:31:49,239 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 13:31:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:49,239 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 13:31:49,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:31:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 13:31:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [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 [137, 136, 1, 1] [2018-07-25 13:31:49,240 INFO L415 AbstractCegarLoop]: === Iteration 137 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 13:31:49,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:49,742 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 13:31:49,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:49,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:31:49,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 13:31:49,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 13:31:49,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:31:49,745 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 13:31:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:50,152 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 13:31:50,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:31:50,152 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 13:31:50,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:50,153 INFO L225 Difference]: With dead ends: 279 [2018-07-25 13:31:50,153 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 13:31:50,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:31:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 13:31:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 13:31:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 13:31:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 13:31:50,159 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 13:31:50,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:50,159 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 13:31:50,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 13:31:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 13:31:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 13:31:50,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:50,161 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 13:31:50,161 INFO L415 AbstractCegarLoop]: === Iteration 138 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:50,161 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 13:31:50,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:50,792 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 13:31:50,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:50,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 13:31:50,792 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:31:50,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:31:50,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:31:50,795 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 13:31:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:51,275 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 13:31:51,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:31:51,275 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 13:31:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:51,275 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:31:51,276 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:31:51,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:31:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:31:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 13:31:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 13:31:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 13:31:51,281 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 13:31:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:51,281 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 13:31:51,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:31:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 13:31:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 13:31:51,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:51,283 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 13:31:51,283 INFO L415 AbstractCegarLoop]: === Iteration 139 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 13:31:51,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:51,859 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 13:31:51,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:51,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:31:51,860 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:31:51,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:31:51,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:31:51,862 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 13:31:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:52,360 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 13:31:52,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:31:52,360 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 13:31:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:52,361 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:31:52,361 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 13:31:52,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:31:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 13:31:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 13:31:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 13:31:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 13:31:52,365 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 13:31:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:52,365 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 13:31:52,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:31:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 13:31:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 13:31:52,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:52,367 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 13:31:52,367 INFO L415 AbstractCegarLoop]: === Iteration 140 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:52,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 13:31:52,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:53,025 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 13:31:53,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:53,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:31:53,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:31:53,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:31:53,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:31:53,028 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 13:31:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:53,538 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 13:31:53,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:31:53,539 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 13:31:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:53,539 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:31:53,539 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 13:31:53,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:31:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 13:31:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 13:31:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 13:31:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 13:31:53,544 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 13:31:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:53,544 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 13:31:53,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:31:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 13:31:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 13:31:53,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:53,545 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 13:31:53,545 INFO L415 AbstractCegarLoop]: === Iteration 141 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:53,545 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 13:31:53,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:54,088 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 13:31:54,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:54,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:31:54,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 13:31:54,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 13:31:54,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:31:54,091 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 13:31:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:54,604 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 13:31:54,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:31:54,604 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 13:31:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:54,605 INFO L225 Difference]: With dead ends: 287 [2018-07-25 13:31:54,605 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:31:54,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:31:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:31:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 13:31:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 13:31:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 13:31:54,611 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 13:31:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:54,611 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 13:31:54,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 13:31:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 13:31:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 13:31:54,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:54,612 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 13:31:54,613 INFO L415 AbstractCegarLoop]: === Iteration 142 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 13:31:54,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:55,195 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 13:31:55,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:55,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 13:31:55,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:31:55,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:31:55,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:31:55,198 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 13:31:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:55,752 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 13:31:55,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:31:55,752 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 13:31:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:55,753 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:31:55,753 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 13:31:55,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:31:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 13:31:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 13:31:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 13:31:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 13:31:55,757 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 13:31:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:55,757 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 13:31:55,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:31:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 13:31:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 13:31:55,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:55,759 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 13:31:55,759 INFO L415 AbstractCegarLoop]: === Iteration 143 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:55,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 13:31:55,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:56,595 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 13:31:56,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:56,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:31:56,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:31:56,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:31:56,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:31:56,599 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 13:31:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:57,203 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 13:31:57,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:31:57,203 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 13:31:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:57,204 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:31:57,204 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 13:31:57,204 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:31:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 13:31:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 13:31:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 13:31:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 13:31:57,209 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 13:31:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:57,209 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 13:31:57,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:31:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 13:31:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 13:31:57,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:57,211 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 13:31:57,211 INFO L415 AbstractCegarLoop]: === Iteration 144 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:57,211 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 13:31:57,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:57,949 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 13:31:57,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:57,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:31:57,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:31:57,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:31:57,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:31:57,952 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 13:31:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:58,461 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 13:31:58,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:31:58,461 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 13:31:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:58,462 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:31:58,462 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:31:58,464 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:31:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:31:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 13:31:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 13:31:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 13:31:58,467 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 13:31:58,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:58,467 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 13:31:58,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:31:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 13:31:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 13:31:58,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:58,468 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 13:31:58,468 INFO L415 AbstractCegarLoop]: === Iteration 145 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 13:31:58,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:59,043 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 13:31:59,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:59,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:31:59,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 13:31:59,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 13:31:59,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:31:59,048 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 13:31:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:59,560 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 13:31:59,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:31:59,560 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 13:31:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:59,561 INFO L225 Difference]: With dead ends: 295 [2018-07-25 13:31:59,561 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 13:31:59,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:31:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 13:31:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 13:31:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 13:31:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 13:31:59,565 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 13:31:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:59,566 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 13:31:59,566 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 13:31:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 13:31:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 13:31:59,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:59,567 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 13:31:59,567 INFO L415 AbstractCegarLoop]: === Iteration 146 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 13:31:59,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:00,180 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 13:32:00,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:00,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 13:32:00,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:32:00,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:32:00,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:32:00,183 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 13:32:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:00,595 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 13:32:00,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:32:00,595 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 13:32:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:00,596 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:32:00,596 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 13:32:00,597 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:32:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 13:32:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 13:32:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 13:32:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 13:32:00,600 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 13:32:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:00,600 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 13:32:00,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:32:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 13:32:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 13:32:00,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:00,601 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 13:32:00,602 INFO L415 AbstractCegarLoop]: === Iteration 147 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:00,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 13:32:00,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:01,250 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 13:32:01,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:01,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:32:01,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:32:01,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:32:01,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:32:01,253 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 13:32:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:01,464 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 13:32:01,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:32:01,464 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 13:32:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:01,465 INFO L225 Difference]: With dead ends: 299 [2018-07-25 13:32:01,465 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:32:01,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:32:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:32:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 13:32:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 13:32:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 13:32:01,471 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 13:32:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:01,472 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 13:32:01,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:32:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 13:32:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 13:32:01,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:01,473 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 13:32:01,473 INFO L415 AbstractCegarLoop]: === Iteration 148 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 13:32:01,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:02,185 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 13:32:02,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:02,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:32:02,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:32:02,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:32:02,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:32:02,188 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 13:32:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:02,915 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 13:32:02,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:32:02,916 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 13:32:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:02,916 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:32:02,916 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 13:32:02,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:32:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 13:32:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 13:32:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 13:32:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 13:32:02,921 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 13:32:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:02,921 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 13:32:02,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:32:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 13:32:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 13:32:02,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:02,922 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 13:32:02,922 INFO L415 AbstractCegarLoop]: === Iteration 149 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 13:32:02,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:03,550 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 13:32:03,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:03,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:32:03,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 13:32:03,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 13:32:03,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:32:03,554 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 13:32:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:04,137 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 13:32:04,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:32:04,138 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 13:32:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:04,138 INFO L225 Difference]: With dead ends: 303 [2018-07-25 13:32:04,138 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 13:32:04,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:32:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 13:32:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 13:32:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 13:32:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 13:32:04,144 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 13:32:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:04,144 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 13:32:04,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 13:32:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 13:32:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 13:32:04,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:04,145 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 13:32:04,146 INFO L415 AbstractCegarLoop]: === Iteration 150 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 13:32:04,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:04,813 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 13:32:04,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:04,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 13:32:04,813 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:32:04,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:32:04,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:32:04,816 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 13:32:05,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:05,186 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 13:32:05,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:32:05,186 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 13:32:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:05,187 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:32:05,187 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:32:05,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:32:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:32:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 13:32:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 13:32:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 13:32:05,226 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 13:32:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:05,227 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 13:32:05,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:32:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 13:32:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 13:32:05,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:05,228 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 13:32:05,228 INFO L415 AbstractCegarLoop]: === Iteration 151 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:05,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 13:32:05,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:05,980 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 13:32:05,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:05,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:32:05,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:32:05,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:32:05,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:32:05,984 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 13:32:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:06,734 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 13:32:06,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:32:06,734 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 13:32:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:06,735 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:32:06,735 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 13:32:06,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:32:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 13:32:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 13:32:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 13:32:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 13:32:06,740 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 13:32:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:06,741 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 13:32:06,741 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:32:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 13:32:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 13:32:06,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:06,742 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 13:32:06,742 INFO L415 AbstractCegarLoop]: === Iteration 152 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 13:32:06,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:07,453 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 13:32:07,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:07,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:32:07,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:32:07,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:32:07,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:32:07,456 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 13:32:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:08,175 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 13:32:08,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:32:08,176 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 13:32:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:08,177 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:32:08,177 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 13:32:08,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:32:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 13:32:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 13:32:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 13:32:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 13:32:08,183 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 13:32:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:08,184 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 13:32:08,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:32:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 13:32:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 13:32:08,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:08,185 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 13:32:08,185 INFO L415 AbstractCegarLoop]: === Iteration 153 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 13:32:08,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:09,086 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 13:32:09,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:09,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:32:09,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 13:32:09,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 13:32:09,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:32:09,090 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 13:32:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:09,372 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 13:32:09,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:32:09,372 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 13:32:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:09,373 INFO L225 Difference]: With dead ends: 311 [2018-07-25 13:32:09,373 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:32:09,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:32:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:32:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 13:32:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 13:32:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 13:32:09,377 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 13:32:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:09,378 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 13:32:09,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 13:32:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 13:32:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 13:32:09,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:09,379 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 13:32:09,379 INFO L415 AbstractCegarLoop]: === Iteration 154 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 13:32:09,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:10,090 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 13:32:10,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:10,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 13:32:10,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:32:10,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:32:10,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:32:10,094 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 13:32:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:10,795 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 13:32:10,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:32:10,795 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 13:32:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:10,796 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:32:10,796 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 13:32:10,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:32:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 13:32:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 13:32:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 13:32:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 13:32:10,803 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 13:32:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:10,803 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 13:32:10,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:32:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 13:32:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 13:32:10,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:10,805 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 13:32:10,805 INFO L415 AbstractCegarLoop]: === Iteration 155 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:10,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 13:32:10,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:11,614 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 13:32:11,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:11,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:32:11,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:32:11,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:32:11,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:32:11,618 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 13:32:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:11,846 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 13:32:11,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:32:11,846 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 13:32:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:11,847 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:32:11,847 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 13:32:11,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:32:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 13:32:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 13:32:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 13:32:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 13:32:11,851 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 13:32:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:11,851 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 13:32:11,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:32:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 13:32:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 13:32:11,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:11,853 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 13:32:11,853 INFO L415 AbstractCegarLoop]: === Iteration 156 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 13:32:11,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:12,545 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 13:32:12,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:12,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:32:12,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:32:12,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:32:12,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:32:12,549 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 13:32:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:13,281 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 13:32:13,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:32:13,281 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 13:32:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:13,281 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:32:13,281 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:32:13,283 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:32:13,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:32:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 13:32:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 13:32:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 13:32:13,287 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 13:32:13,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:13,287 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 13:32:13,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:32:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 13:32:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 13:32:13,289 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:13,289 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 13:32:13,289 INFO L415 AbstractCegarLoop]: === Iteration 157 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 13:32:13,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:14,193 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 13:32:14,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:14,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:32:14,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 13:32:14,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 13:32:14,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:32:14,197 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 13:32:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:14,568 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 13:32:14,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:32:14,568 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 13:32:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:14,569 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:32:14,569 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 13:32:14,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:32:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 13:32:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 13:32:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 13:32:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 13:32:14,573 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 13:32:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:14,573 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 13:32:14,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 13:32:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 13:32:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 13:32:14,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:14,574 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 13:32:14,574 INFO L415 AbstractCegarLoop]: === Iteration 158 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 13:32:14,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:15,265 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 13:32:15,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:15,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 13:32:15,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:32:15,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:32:15,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:32:15,268 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 13:32:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:16,036 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 13:32:16,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:32:16,036 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 13:32:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:16,037 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:32:16,037 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 13:32:16,038 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:32:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 13:32:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 13:32:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 13:32:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 13:32:16,041 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 13:32:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:16,041 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 13:32:16,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:32:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 13:32:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 13:32:16,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:16,043 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 13:32:16,043 INFO L415 AbstractCegarLoop]: === Iteration 159 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 13:32:16,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:16,785 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 13:32:16,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:16,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:32:16,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:32:16,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:32:16,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:32:16,790 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 13:32:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:17,933 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 13:32:17,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:32:17,933 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 13:32:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:17,933 INFO L225 Difference]: With dead ends: 323 [2018-07-25 13:32:17,934 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:32:17,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:32:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:32:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 13:32:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 13:32:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 13:32:17,939 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 13:32:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:17,939 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 13:32:17,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:32:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 13:32:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 13:32:17,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:17,940 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 13:32:17,941 INFO L415 AbstractCegarLoop]: === Iteration 160 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 13:32:17,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:18,800 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 13:32:18,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:18,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:32:18,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:32:18,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:32:18,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:32:18,804 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 13:32:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:19,117 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 13:32:19,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:32:19,117 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 13:32:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:19,118 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:32:19,118 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 13:32:19,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:32:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 13:32:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 13:32:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 13:32:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 13:32:19,123 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 13:32:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:19,124 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 13:32:19,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:32:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 13:32:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 13:32:19,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:19,125 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 13:32:19,125 INFO L415 AbstractCegarLoop]: === Iteration 161 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:19,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 13:32:19,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:19,981 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 13:32:19,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:19,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:32:19,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 13:32:19,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 13:32:19,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:32:19,985 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 13:32:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:21,044 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 13:32:21,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:32:21,044 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 13:32:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:21,045 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:32:21,045 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 13:32:21,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:32:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 13:32:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 13:32:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 13:32:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 13:32:21,051 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 13:32:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:21,051 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 13:32:21,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 13:32:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 13:32:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 13:32:21,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:21,052 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 13:32:21,052 INFO L415 AbstractCegarLoop]: === Iteration 162 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 13:32:21,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:21,933 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 13:32:21,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:21,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 13:32:21,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:32:21,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:32:21,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:32:21,937 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 13:32:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:23,170 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 13:32:23,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:32:23,171 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 13:32:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:23,171 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:32:23,171 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:32:23,173 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:32:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:32:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 13:32:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 13:32:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 13:32:23,177 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 13:32:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:23,177 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 13:32:23,177 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:32:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 13:32:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 13:32:23,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:23,178 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 13:32:23,179 INFO L415 AbstractCegarLoop]: === Iteration 163 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 13:32:23,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:24,138 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 13:32:24,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:24,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:32:24,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:32:24,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:32:24,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:32:24,143 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 13:32:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:25,066 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 13:32:25,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:32:25,066 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 13:32:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:25,067 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:32:25,067 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 13:32:25,069 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:32:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 13:32:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 13:32:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 13:32:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 13:32:25,072 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 13:32:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:25,073 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 13:32:25,073 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:32:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 13:32:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 13:32:25,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:25,074 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 13:32:25,074 INFO L415 AbstractCegarLoop]: === Iteration 164 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:25,074 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 13:32:25,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:25,981 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 13:32:25,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:25,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:32:25,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:32:25,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:32:25,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:32:25,985 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 13:32:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:26,325 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 13:32:26,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:32:26,326 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 13:32:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:26,326 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:32:26,326 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 13:32:26,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:32:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 13:32:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 13:32:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 13:32:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 13:32:26,332 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 13:32:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:26,332 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 13:32:26,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:32:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 13:32:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 13:32:26,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:26,334 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 13:32:26,334 INFO L415 AbstractCegarLoop]: === Iteration 165 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 13:32:26,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:27,429 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 13:32:27,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:27,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:32:27,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 13:32:27,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 13:32:27,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:32:27,433 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 13:32:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:27,838 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 13:32:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:32:27,838 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 13:32:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:27,839 INFO L225 Difference]: With dead ends: 335 [2018-07-25 13:32:27,839 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:32:27,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:32:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:32:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 13:32:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 13:32:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 13:32:27,843 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 13:32:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:27,843 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 13:32:27,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 13:32:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 13:32:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 13:32:27,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:27,845 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 13:32:27,845 INFO L415 AbstractCegarLoop]: === Iteration 166 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 13:32:27,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:28,631 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 13:32:28,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:28,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 13:32:28,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:32:28,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:32:28,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:32:28,635 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 13:32:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:29,391 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 13:32:29,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:32:29,392 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 13:32:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:29,392 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:32:29,392 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 13:32:29,394 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:32:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 13:32:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 13:32:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 13:32:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 13:32:29,397 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 13:32:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:29,397 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 13:32:29,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:32:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 13:32:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 13:32:29,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:29,398 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 13:32:29,399 INFO L415 AbstractCegarLoop]: === Iteration 167 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 13:32:29,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:30,264 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 13:32:30,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:30,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:32:30,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:32:30,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:32:30,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:32:30,268 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 13:32:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:31,219 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 13:32:31,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:32:31,219 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 13:32:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:31,220 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:32:31,220 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 13:32:31,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:32:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 13:32:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 13:32:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 13:32:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 13:32:31,225 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 13:32:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:31,225 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 13:32:31,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:32:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 13:32:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 13:32:31,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:31,226 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 13:32:31,226 INFO L415 AbstractCegarLoop]: === Iteration 168 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:31,226 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 13:32:31,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:32,094 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 13:32:32,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:32,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:32:32,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:32:32,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:32:32,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:32:32,097 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 13:32:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:32,976 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 13:32:32,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:32:32,977 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 13:32:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:32,977 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:32:32,977 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:32:32,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:32:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:32:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 13:32:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 13:32:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 13:32:32,981 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 13:32:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:32,982 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 13:32:32,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:32:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 13:32:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 13:32:32,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:32,983 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 13:32:32,983 INFO L415 AbstractCegarLoop]: === Iteration 169 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:32,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 13:32:32,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:33,859 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 13:32:33,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:33,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:32:33,859 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 13:32:33,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 13:32:33,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:32:33,863 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 13:32:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:34,853 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 13:32:34,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:32:34,853 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 13:32:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:34,854 INFO L225 Difference]: With dead ends: 343 [2018-07-25 13:32:34,854 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 13:32:34,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:32:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 13:32:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 13:32:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 13:32:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 13:32:34,859 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 13:32:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:34,859 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 13:32:34,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 13:32:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 13:32:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 13:32:34,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:34,860 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 13:32:34,860 INFO L415 AbstractCegarLoop]: === Iteration 170 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:34,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 13:32:34,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:35,729 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 13:32:35,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:35,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 13:32:35,730 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:32:35,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:32:35,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:32:35,733 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 13:32:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:36,743 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 13:32:36,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:32:36,744 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 13:32:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:36,744 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:32:36,744 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 13:32:36,746 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:32:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 13:32:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 13:32:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 13:32:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 13:32:36,749 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 13:32:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:36,749 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 13:32:36,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:32:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 13:32:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 13:32:36,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:36,750 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 13:32:36,751 INFO L415 AbstractCegarLoop]: === Iteration 171 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 13:32:36,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:37,620 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 13:32:37,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:37,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:32:37,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:32:37,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:32:37,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:32:37,626 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 13:32:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:38,673 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 13:32:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:32:38,673 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 13:32:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:38,674 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:32:38,674 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:32:38,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:32:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:32:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 13:32:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 13:32:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 13:32:38,679 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 13:32:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:38,679 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 13:32:38,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:32:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 13:32:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 13:32:38,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:38,680 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 13:32:38,680 INFO L415 AbstractCegarLoop]: === Iteration 172 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 13:32:38,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:39,551 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 13:32:39,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:39,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:32:39,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:32:39,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:32:39,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:32:39,555 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 13:32:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:40,274 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 13:32:40,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:32:40,274 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 13:32:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:40,275 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:32:40,275 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 13:32:40,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:32:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 13:32:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 13:32:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 13:32:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 13:32:40,281 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 13:32:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:40,282 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 13:32:40,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:32:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 13:32:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 13:32:40,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:40,283 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 13:32:40,284 INFO L415 AbstractCegarLoop]: === Iteration 173 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 13:32:40,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:41,397 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 13:32:41,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:41,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:32:41,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 13:32:41,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 13:32:41,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:32:41,399 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 13:32:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:41,758 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 13:32:41,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:32:41,759 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 13:32:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:41,760 INFO L225 Difference]: With dead ends: 351 [2018-07-25 13:32:41,760 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 13:32:41,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:32:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 13:32:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 13:32:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 13:32:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 13:32:41,765 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 13:32:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:41,765 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 13:32:41,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 13:32:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 13:32:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 13:32:41,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:41,766 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 13:32:41,766 INFO L415 AbstractCegarLoop]: === Iteration 174 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:41,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 13:32:41,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:42,654 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 13:32:42,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:42,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 13:32:42,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:32:42,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:32:42,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:32:42,658 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 13:32:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:43,091 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 13:32:43,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:32:43,091 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 13:32:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:43,092 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:32:43,092 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:32:43,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:32:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:32:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 13:32:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 13:32:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 13:32:43,097 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 13:32:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:43,097 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 13:32:43,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:32:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 13:32:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 13:32:43,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:43,098 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 13:32:43,099 INFO L415 AbstractCegarLoop]: === Iteration 175 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 13:32:43,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:44,061 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 13:32:44,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:44,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:32:44,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:32:44,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:32:44,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:32:44,067 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 13:32:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:45,319 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 13:32:45,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:32:45,320 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 13:32:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:45,320 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:32:45,320 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 13:32:45,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:32:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 13:32:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 13:32:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 13:32:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 13:32:45,326 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 13:32:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:45,326 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 13:32:45,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:32:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 13:32:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 13:32:45,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:45,328 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 13:32:45,328 INFO L415 AbstractCegarLoop]: === Iteration 176 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 13:32:45,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:46,463 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 13:32:46,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:46,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:32:46,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:32:46,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:32:46,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:32:46,468 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 13:32:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:48,156 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 13:32:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:32:48,157 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 13:32:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:48,157 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:32:48,157 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 13:32:48,160 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:32:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 13:32:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 13:32:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 13:32:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 13:32:48,164 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 13:32:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:48,164 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 13:32:48,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:32:48,164 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 13:32:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 13:32:48,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:48,165 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 13:32:48,165 INFO L415 AbstractCegarLoop]: === Iteration 177 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:48,166 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 13:32:48,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:49,283 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 13:32:49,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:49,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:32:49,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 13:32:49,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 13:32:49,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:32:49,288 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 13:32:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:50,335 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 13:32:50,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:32:50,336 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 13:32:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:50,336 INFO L225 Difference]: With dead ends: 359 [2018-07-25 13:32:50,336 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:32:50,338 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:32:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:32:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 13:32:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 13:32:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 13:32:50,342 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 13:32:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:50,342 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 13:32:50,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 13:32:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 13:32:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 13:32:50,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:50,344 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 13:32:50,344 INFO L415 AbstractCegarLoop]: === Iteration 178 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:50,344 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 13:32:50,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:51,502 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 13:32:51,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:51,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 13:32:51,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:32:51,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:32:51,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:32:51,505 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 13:32:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:51,996 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 13:32:51,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:32:51,996 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 13:32:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:51,997 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:32:51,997 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 13:32:51,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:32:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 13:32:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 13:32:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 13:32:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 13:32:52,002 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 13:32:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:52,002 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 13:32:52,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:32:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 13:32:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 13:32:52,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:52,003 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 13:32:52,004 INFO L415 AbstractCegarLoop]: === Iteration 179 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:52,004 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 13:32:52,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:52,940 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 13:32:52,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:52,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:32:52,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:32:52,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:32:52,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:32:52,944 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 13:32:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:54,355 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 13:32:54,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:32:54,355 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 13:32:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:54,356 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:32:54,356 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 13:32:54,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:32:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 13:32:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 13:32:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 13:32:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 13:32:54,361 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 13:32:54,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:54,361 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 13:32:54,361 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:32:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 13:32:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 13:32:54,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:54,363 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 13:32:54,363 INFO L415 AbstractCegarLoop]: === Iteration 180 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:54,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 13:32:54,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:55,387 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 13:32:55,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:55,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:32:55,388 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:32:55,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:32:55,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:32:55,390 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 13:32:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:56,126 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 13:32:56,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:32:56,126 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 13:32:56,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:56,127 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:32:56,127 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:32:56,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:32:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:32:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 13:32:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 13:32:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 13:32:56,131 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 13:32:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:56,131 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 13:32:56,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:32:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 13:32:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 13:32:56,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:56,133 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 13:32:56,133 INFO L415 AbstractCegarLoop]: === Iteration 181 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 13:32:56,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:57,124 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 13:32:57,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:57,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:32:57,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 13:32:57,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 13:32:57,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:32:57,129 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 13:32:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:58,001 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 13:32:58,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:32:58,001 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 13:32:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:58,002 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:32:58,002 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 13:32:58,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:32:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 13:32:58,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 13:32:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 13:32:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 13:32:58,008 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 13:32:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:58,008 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 13:32:58,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 13:32:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 13:32:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 13:32:58,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:58,010 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 13:32:58,010 INFO L415 AbstractCegarLoop]: === Iteration 182 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 13:32:58,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:59,015 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 13:32:59,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:59,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 13:32:59,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:32:59,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:32:59,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:32:59,019 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 13:33:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:00,374 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 13:33:00,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:33:00,374 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 13:33:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:00,375 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:33:00,375 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 13:33:00,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:33:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 13:33:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 13:33:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 13:33:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 13:33:00,380 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 13:33:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:00,380 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 13:33:00,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:33:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 13:33:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 13:33:00,381 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:00,381 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 13:33:00,381 INFO L415 AbstractCegarLoop]: === Iteration 183 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:00,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 13:33:00,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:01,376 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 13:33:01,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:01,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:33:01,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:33:01,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:33:01,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:33:01,380 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 13:33:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:02,010 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 13:33:02,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:33:02,010 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 13:33:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:02,011 INFO L225 Difference]: With dead ends: 371 [2018-07-25 13:33:02,011 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 13:33:02,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:33:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 13:33:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 13:33:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 13:33:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 13:33:02,016 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 13:33:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:02,016 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 13:33:02,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:33:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 13:33:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 13:33:02,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:02,017 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 13:33:02,018 INFO L415 AbstractCegarLoop]: === Iteration 184 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 13:33:02,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:03,053 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 13:33:03,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:03,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:33:03,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:33:03,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:33:03,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:33:03,057 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 13:33:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:04,455 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 13:33:04,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:33:04,455 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 13:33:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:04,456 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:33:04,456 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 13:33:04,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:33:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 13:33:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 13:33:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 13:33:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 13:33:04,463 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 13:33:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:04,463 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 13:33:04,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:33:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 13:33:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 13:33:04,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:04,464 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 13:33:04,464 INFO L415 AbstractCegarLoop]: === Iteration 185 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 13:33:04,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:05,546 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 13:33:05,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:05,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:33:05,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 13:33:05,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 13:33:05,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:33:05,551 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 13:33:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:06,413 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 13:33:06,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:33:06,414 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 13:33:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:06,414 INFO L225 Difference]: With dead ends: 375 [2018-07-25 13:33:06,414 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 13:33:06,416 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:33:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 13:33:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 13:33:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 13:33:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 13:33:06,420 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 13:33:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:06,420 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 13:33:06,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 13:33:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 13:33:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 13:33:06,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:06,421 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 13:33:06,421 INFO L415 AbstractCegarLoop]: === Iteration 186 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 13:33:06,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:07,477 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 13:33:07,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:07,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 13:33:07,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:33:07,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:33:07,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:33:07,482 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 13:33:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:08,422 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 13:33:08,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:33:08,422 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 13:33:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:08,423 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:33:08,423 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 13:33:08,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:33:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 13:33:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 13:33:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 13:33:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 13:33:08,428 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 13:33:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:08,428 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 13:33:08,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:33:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 13:33:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 13:33:08,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:08,430 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 13:33:08,430 INFO L415 AbstractCegarLoop]: === Iteration 187 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 13:33:08,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:09,521 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 13:33:09,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:09,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:33:09,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:33:09,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:33:09,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:33:09,526 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 13:33:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:11,103 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 13:33:11,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:33:11,103 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 13:33:11,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:11,104 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:33:11,104 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 13:33:11,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:33:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 13:33:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 13:33:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 13:33:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 13:33:11,109 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 13:33:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:11,109 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 13:33:11,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:33:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 13:33:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 13:33:11,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:11,110 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 13:33:11,110 INFO L415 AbstractCegarLoop]: === Iteration 188 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 13:33:11,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:12,206 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 13:33:12,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:12,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:33:12,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:33:12,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:33:12,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:33:12,211 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 13:33:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:12,674 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 13:33:12,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:33:12,674 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 13:33:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:12,675 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:33:12,675 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 13:33:12,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:33:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 13:33:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 13:33:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 13:33:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 13:33:12,680 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 13:33:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:12,681 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 13:33:12,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:33:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 13:33:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 13:33:12,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:12,682 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 13:33:12,683 INFO L415 AbstractCegarLoop]: === Iteration 189 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 13:33:12,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:13,783 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 13:33:13,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:13,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:33:13,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 13:33:13,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 13:33:13,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:33:13,787 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 13:33:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:14,911 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 13:33:14,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:33:14,911 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 13:33:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:14,912 INFO L225 Difference]: With dead ends: 383 [2018-07-25 13:33:14,912 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 13:33:14,913 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:33:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 13:33:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 13:33:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 13:33:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 13:33:14,917 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 13:33:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:14,917 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 13:33:14,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 13:33:14,917 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 13:33:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 13:33:14,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:14,919 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 13:33:14,919 INFO L415 AbstractCegarLoop]: === Iteration 190 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 13:33:14,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:16,036 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 13:33:16,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:16,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 13:33:16,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:33:16,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:33:16,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:33:16,041 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 13:33:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:17,747 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 13:33:17,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:33:17,747 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 13:33:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:17,748 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:33:17,748 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 13:33:17,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:33:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 13:33:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 13:33:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 13:33:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 13:33:17,753 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 13:33:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:17,753 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 13:33:17,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:33:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 13:33:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 13:33:17,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:17,755 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 13:33:17,755 INFO L415 AbstractCegarLoop]: === Iteration 191 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:17,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 13:33:17,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:18,891 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 13:33:18,892 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:18,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:33:18,892 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:33:18,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:33:18,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:33:18,896 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 13:33:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:19,971 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 13:33:19,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:33:19,971 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 13:33:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:19,972 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:33:19,972 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 13:33:19,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:33:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 13:33:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 13:33:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 13:33:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 13:33:19,977 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 13:33:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:19,977 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 13:33:19,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:33:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 13:33:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 13:33:19,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:19,979 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 13:33:19,980 INFO L415 AbstractCegarLoop]: === Iteration 192 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 13:33:19,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:21,338 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 13:33:21,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:21,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:33:21,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:33:21,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:33:21,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:33:21,346 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 13:33:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:21,871 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 13:33:21,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:33:21,871 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 13:33:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:21,872 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:33:21,872 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 13:33:21,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:33:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 13:33:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 13:33:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 13:33:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 13:33:21,878 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 13:33:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:21,878 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 13:33:21,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:33:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 13:33:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 13:33:21,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:21,880 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 13:33:21,880 INFO L415 AbstractCegarLoop]: === Iteration 193 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 13:33:21,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:23,051 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 13:33:23,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:23,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:33:23,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 13:33:23,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 13:33:23,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:33:23,056 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 13:33:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:23,834 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 13:33:23,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:33:23,834 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 13:33:23,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:23,835 INFO L225 Difference]: With dead ends: 391 [2018-07-25 13:33:23,835 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 13:33:23,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:33:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 13:33:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 13:33:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 13:33:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 13:33:23,840 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 13:33:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:23,841 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 13:33:23,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 13:33:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 13:33:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 13:33:23,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:23,842 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 13:33:23,842 INFO L415 AbstractCegarLoop]: === Iteration 194 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 13:33:23,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:25,010 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 13:33:25,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:25,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 13:33:25,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:33:25,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:33:25,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:33:25,015 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 13:33:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:26,423 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 13:33:26,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:33:26,423 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 13:33:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:26,424 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:33:26,424 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 13:33:26,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:33:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 13:33:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 13:33:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 13:33:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 13:33:26,430 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 13:33:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:26,430 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 13:33:26,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:33:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 13:33:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 13:33:26,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:26,432 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 13:33:26,432 INFO L415 AbstractCegarLoop]: === Iteration 195 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 13:33:26,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:27,667 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 13:33:27,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:27,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:33:27,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:33:27,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:33:27,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:33:27,671 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 13:33:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:29,456 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 13:33:29,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:33:29,456 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 13:33:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:29,456 INFO L225 Difference]: With dead ends: 395 [2018-07-25 13:33:29,456 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 13:33:29,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:33:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 13:33:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 13:33:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 13:33:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 13:33:29,462 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 13:33:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:29,462 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 13:33:29,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:33:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 13:33:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 13:33:29,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:29,464 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 13:33:29,464 INFO L415 AbstractCegarLoop]: === Iteration 196 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 13:33:29,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:30,755 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 13:33:30,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:30,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:33:30,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:33:30,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:33:30,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:33:30,761 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 13:33:32,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:32,743 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 13:33:32,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:33:32,743 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 13:33:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:32,744 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:33:32,744 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 13:33:32,746 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:33:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 13:33:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 13:33:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 13:33:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 13:33:32,749 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 13:33:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:32,750 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 13:33:32,750 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:33:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 13:33:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 13:33:32,751 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:32,751 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 13:33:32,751 INFO L415 AbstractCegarLoop]: === Iteration 197 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:32,751 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 13:33:32,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:34,033 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 13:33:34,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:34,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:33:34,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 13:33:34,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 13:33:34,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:33:34,038 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 13:33:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:36,211 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 13:33:36,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:33:36,211 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 13:33:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:36,212 INFO L225 Difference]: With dead ends: 399 [2018-07-25 13:33:36,212 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 13:33:36,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:33:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 13:33:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 13:33:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 13:33:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 13:33:36,218 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 13:33:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:36,219 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 13:33:36,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 13:33:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 13:33:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 13:33:36,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:36,220 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 13:33:36,220 INFO L415 AbstractCegarLoop]: === Iteration 198 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 13:33:36,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:37,703 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 13:33:37,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:37,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 13:33:37,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:33:37,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:33:37,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:33:37,709 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 13:33:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,423 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 13:33:40,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:33:40,423 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 13:33:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,423 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:33:40,423 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 13:33:40,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:33:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 13:33:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 13:33:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 13:33:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 13:33:40,429 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 13:33:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,429 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 13:33:40,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:33:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 13:33:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 13:33:40,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,431 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 13:33:40,431 INFO L415 AbstractCegarLoop]: === Iteration 199 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,431 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 13:33:40,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,727 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 13:33:41,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:33:41,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:33:41,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:33:41,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:33:41,733 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 13:33:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,818 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 13:33:43,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:33:43,818 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 13:33:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,819 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:33:43,819 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 13:33:43,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:33:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 13:33:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 13:33:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 13:33:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 13:33:43,824 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 13:33:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,825 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 13:33:43,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:33:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 13:33:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 13:33:43,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,826 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 13:33:43,826 INFO L415 AbstractCegarLoop]: === Iteration 200 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 13:33:43,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,159 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 13:33:45,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:33:45,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:33:45,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:33:45,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:33:45,162 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 13:33:46,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:46,978 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 13:33:46,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:33:46,978 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 13:33:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:46,979 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:33:46,979 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 13:33:46,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:33:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 13:33:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 13:33:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 13:33:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 13:33:46,984 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 13:33:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:46,984 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 13:33:46,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:33:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 13:33:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 13:33:46,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:46,985 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 13:33:46,985 INFO L415 AbstractCegarLoop]: === Iteration 201 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:46,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 13:33:46,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:48,266 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 13:33:48,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:48,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:33:48,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 13:33:48,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 13:33:48,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:33:48,272 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 13:33:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:49,813 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 13:33:49,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:33:49,813 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 13:33:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:49,814 INFO L225 Difference]: With dead ends: 407 [2018-07-25 13:33:49,814 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 13:33:49,816 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:33:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 13:33:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 13:33:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 13:33:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 13:33:49,820 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 13:33:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:49,820 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 13:33:49,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 13:33:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 13:33:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 13:33:49,821 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:49,821 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 13:33:49,821 INFO L415 AbstractCegarLoop]: === Iteration 202 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 13:33:49,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:51,117 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 13:33:51,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:51,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 13:33:51,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:33:51,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:33:51,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:33:51,122 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 13:33:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:51,792 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 13:33:51,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:33:51,793 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 13:33:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:51,794 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:33:51,794 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 13:33:51,796 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:33:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 13:33:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 13:33:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 13:33:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 13:33:51,802 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 13:33:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:51,802 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 13:33:51,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:33:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 13:33:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 13:33:51,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:51,804 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 13:33:51,804 INFO L415 AbstractCegarLoop]: === Iteration 203 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:51,805 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 13:33:51,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:53,145 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 13:33:53,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:53,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:33:53,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:33:53,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:33:53,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:33:53,150 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 13:33:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:54,073 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 13:33:54,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:33:54,073 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 13:33:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:54,074 INFO L225 Difference]: With dead ends: 411 [2018-07-25 13:33:54,074 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 13:33:54,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:33:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 13:33:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 13:33:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 13:33:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 13:33:54,080 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 13:33:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:54,080 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 13:33:54,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:33:54,080 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 13:33:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 13:33:54,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:54,081 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 13:33:54,081 INFO L415 AbstractCegarLoop]: === Iteration 204 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 13:33:54,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:55,466 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 13:33:55,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:55,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:33:55,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:33:55,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:33:55,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:33:55,471 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 13:33:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:57,131 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 13:33:57,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:33:57,131 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 13:33:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:57,131 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:33:57,132 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 13:33:57,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:33:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 13:33:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 13:33:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 13:33:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 13:33:57,138 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 13:33:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:57,138 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 13:33:57,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:33:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 13:33:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 13:33:57,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:57,140 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 13:33:57,140 INFO L415 AbstractCegarLoop]: === Iteration 205 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 13:33:57,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:58,534 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 13:33:58,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:58,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:33:58,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 13:33:58,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 13:33:58,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:33:58,541 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 13:34:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:01,321 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 13:34:01,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:34:01,321 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 13:34:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:01,322 INFO L225 Difference]: With dead ends: 415 [2018-07-25 13:34:01,322 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 13:34:01,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:34:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 13:34:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 13:34:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 13:34:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 13:34:01,331 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 13:34:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:01,332 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 13:34:01,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 13:34:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 13:34:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 13:34:01,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:01,362 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 13:34:01,362 INFO L415 AbstractCegarLoop]: === Iteration 206 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:01,362 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 13:34:01,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:02,777 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 13:34:02,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:02,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 13:34:02,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:34:02,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:34:02,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:34:02,783 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 13:34:04,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:04,129 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 13:34:04,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:34:04,130 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 13:34:04,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:04,130 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:34:04,130 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 13:34:04,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:34:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 13:34:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 13:34:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 13:34:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 13:34:04,136 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 13:34:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:04,136 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 13:34:04,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:34:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 13:34:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 13:34:04,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:04,138 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 13:34:04,138 INFO L415 AbstractCegarLoop]: === Iteration 207 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 13:34:04,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:05,614 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 13:34:05,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:05,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:34:05,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:34:05,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:34:05,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:34:05,618 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 13:34:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:06,646 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 13:34:06,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:34:06,646 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 13:34:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:06,647 INFO L225 Difference]: With dead ends: 419 [2018-07-25 13:34:06,647 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 13:34:06,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:34:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 13:34:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 13:34:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 13:34:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 13:34:06,652 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 13:34:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:06,652 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 13:34:06,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:34:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 13:34:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 13:34:06,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:06,654 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 13:34:06,654 INFO L415 AbstractCegarLoop]: === Iteration 208 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 13:34:06,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:08,042 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 13:34:08,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:08,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:34:08,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:34:08,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:34:08,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:34:08,048 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 13:34:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:10,510 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 13:34:10,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:34:10,510 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 13:34:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:10,511 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:34:10,511 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 13:34:10,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:34:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 13:34:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 13:34:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 13:34:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 13:34:10,518 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 13:34:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:10,518 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 13:34:10,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:34:10,518 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 13:34:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 13:34:10,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:10,519 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 13:34:10,519 INFO L415 AbstractCegarLoop]: === Iteration 209 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:10,520 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 13:34:10,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:12,114 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 13:34:12,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:12,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:34:12,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 13:34:12,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 13:34:12,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:34:12,121 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 13:34:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:13,624 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 13:34:13,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:34:13,625 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 13:34:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:13,625 INFO L225 Difference]: With dead ends: 423 [2018-07-25 13:34:13,625 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 13:34:13,627 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:34:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 13:34:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 13:34:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 13:34:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 13:34:13,631 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 13:34:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:13,632 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 13:34:13,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 13:34:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 13:34:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 13:34:13,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:13,633 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 13:34:13,633 INFO L415 AbstractCegarLoop]: === Iteration 210 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 13:34:13,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:15,172 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 13:34:15,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:15,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 13:34:15,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:34:15,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:34:15,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:34:15,176 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 13:34:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:17,116 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 13:34:17,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:34:17,116 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 13:34:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:17,117 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:34:17,117 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 13:34:17,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:34:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 13:34:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 13:34:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 13:34:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 13:34:17,122 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 13:34:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:17,122 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 13:34:17,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:34:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 13:34:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 13:34:17,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:17,124 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 13:34:17,124 INFO L415 AbstractCegarLoop]: === Iteration 211 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 13:34:17,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:18,614 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 13:34:18,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:18,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:34:18,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:34:18,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:34:18,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:34:18,619 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 13:34:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:19,765 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 13:34:19,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:34:19,765 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 13:34:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:19,766 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:34:19,766 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 13:34:19,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:34:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 13:34:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 13:34:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 13:34:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 13:34:19,772 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 13:34:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:19,772 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 13:34:19,772 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:34:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 13:34:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 13:34:19,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:19,773 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 13:34:19,773 INFO L415 AbstractCegarLoop]: === Iteration 212 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:19,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 13:34:19,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:21,328 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 13:34:21,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:21,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:34:21,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:34:21,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:34:21,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:34:21,333 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 13:34:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:23,341 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 13:34:23,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:34:23,341 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 13:34:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:23,342 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:34:23,342 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 13:34:23,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:34:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 13:34:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 13:34:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 13:34:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 13:34:23,347 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 13:34:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:23,347 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 13:34:23,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:34:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 13:34:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 13:34:23,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:23,349 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 13:34:23,349 INFO L415 AbstractCegarLoop]: === Iteration 213 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 13:34:23,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:24,893 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 13:34:24,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:24,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:34:24,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 13:34:24,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 13:34:24,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:34:24,899 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 13:34:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:26,619 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 13:34:26,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:34:26,620 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 13:34:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:26,620 INFO L225 Difference]: With dead ends: 431 [2018-07-25 13:34:26,620 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 13:34:26,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:34:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 13:34:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 13:34:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 13:34:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 13:34:26,626 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 13:34:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:26,627 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 13:34:26,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 13:34:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 13:34:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 13:34:26,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:26,628 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 13:34:26,628 INFO L415 AbstractCegarLoop]: === Iteration 214 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 13:34:26,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:28,141 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 13:34:28,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:28,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 13:34:28,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:34:28,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:34:28,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:34:28,147 INFO L87 Difference]: Start difference. First operand 430 states and 430 transitions. Second operand 216 states. [2018-07-25 13:34:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:30,708 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 13:34:30,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:34:30,708 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 429 [2018-07-25 13:34:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:30,709 INFO L225 Difference]: With dead ends: 433 [2018-07-25 13:34:30,709 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 13:34:30,711 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:34:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 13:34:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-07-25 13:34:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-07-25 13:34:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-07-25 13:34:30,715 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 429 [2018-07-25 13:34:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:30,715 INFO L472 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-07-25 13:34:30,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:34:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-07-25 13:34:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-25 13:34:30,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:30,716 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1] [2018-07-25 13:34:30,717 INFO L415 AbstractCegarLoop]: === Iteration 215 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1779562636, now seen corresponding path program 214 times [2018-07-25 13:34:30,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:32,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:32,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:34:32,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 13:34:32,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 13:34:32,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:34:32,318 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 217 states. [2018-07-25 13:34:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:32,986 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 13:34:32,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:34:32,987 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 431 [2018-07-25 13:34:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:32,987 INFO L225 Difference]: With dead ends: 435 [2018-07-25 13:34:32,987 INFO L226 Difference]: Without dead ends: 434 [2018-07-25 13:34:32,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:34:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-25 13:34:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-25 13:34:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-25 13:34:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2018-07-25 13:34:32,993 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 431 [2018-07-25 13:34:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:32,993 INFO L472 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2018-07-25 13:34:32,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 13:34:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2018-07-25 13:34:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-25 13:34:32,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:32,995 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1] [2018-07-25 13:34:32,995 INFO L415 AbstractCegarLoop]: === Iteration 216 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:32,995 INFO L82 PathProgramCache]: Analyzing trace with hash 762710478, now seen corresponding path program 215 times [2018-07-25 13:34:32,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:34,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:34,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 13:34:34,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 13:34:34,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 13:34:34,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:34:34,555 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand 218 states. [2018-07-25 13:34:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:37,061 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 13:34:37,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 13:34:37,061 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 433 [2018-07-25 13:34:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:37,062 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:34:37,062 INFO L226 Difference]: Without dead ends: 436 [2018-07-25 13:34:37,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:34:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-07-25 13:34:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2018-07-25 13:34:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-07-25 13:34:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 436 transitions. [2018-07-25 13:34:37,069 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 436 transitions. Word has length 433 [2018-07-25 13:34:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:37,069 INFO L472 AbstractCegarLoop]: Abstraction has 436 states and 436 transitions. [2018-07-25 13:34:37,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 13:34:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 436 transitions. [2018-07-25 13:34:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-07-25 13:34:37,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:37,070 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1] [2018-07-25 13:34:37,071 INFO L415 AbstractCegarLoop]: === Iteration 217 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:37,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1474637168, now seen corresponding path program 216 times [2018-07-25 13:34:37,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:38,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:38,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 13:34:38,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 13:34:38,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 13:34:38,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:34:38,605 INFO L87 Difference]: Start difference. First operand 436 states and 436 transitions. Second operand 219 states. [2018-07-25 13:34:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:40,939 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 13:34:40,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 13:34:40,939 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 435 [2018-07-25 13:34:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:40,940 INFO L225 Difference]: With dead ends: 439 [2018-07-25 13:34:40,940 INFO L226 Difference]: Without dead ends: 438 [2018-07-25 13:34:40,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:34:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2018-07-25 13:34:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2018-07-25 13:34:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-07-25 13:34:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 438 transitions. [2018-07-25 13:34:40,947 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 438 transitions. Word has length 435 [2018-07-25 13:34:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:40,947 INFO L472 AbstractCegarLoop]: Abstraction has 438 states and 438 transitions. [2018-07-25 13:34:40,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 13:34:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 438 transitions. [2018-07-25 13:34:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-07-25 13:34:40,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:40,948 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1] [2018-07-25 13:34:40,949 INFO L415 AbstractCegarLoop]: === Iteration 218 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash 212890322, now seen corresponding path program 217 times [2018-07-25 13:34:40,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:42,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:42,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 13:34:42,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 13:34:42,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 13:34:42,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:34:42,591 INFO L87 Difference]: Start difference. First operand 438 states and 438 transitions. Second operand 220 states. [2018-07-25 13:34:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:44,041 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 13:34:44,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 13:34:44,041 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 437 [2018-07-25 13:34:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:44,042 INFO L225 Difference]: With dead ends: 441 [2018-07-25 13:34:44,042 INFO L226 Difference]: Without dead ends: 440 [2018-07-25 13:34:44,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:34:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-07-25 13:34:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2018-07-25 13:34:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-07-25 13:34:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 440 transitions. [2018-07-25 13:34:44,048 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 440 transitions. Word has length 437 [2018-07-25 13:34:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:44,048 INFO L472 AbstractCegarLoop]: Abstraction has 440 states and 440 transitions. [2018-07-25 13:34:44,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 13:34:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 440 transitions. [2018-07-25 13:34:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-25 13:34:44,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:44,050 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1] [2018-07-25 13:34:44,050 INFO L415 AbstractCegarLoop]: === Iteration 219 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1570829676, now seen corresponding path program 218 times [2018-07-25 13:34:44,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:45,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:45,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 13:34:45,745 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 13:34:45,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 13:34:45,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:34:45,751 INFO L87 Difference]: Start difference. First operand 440 states and 440 transitions. Second operand 221 states. [2018-07-25 13:34:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:48,117 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-25 13:34:48,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 13:34:48,117 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 439 [2018-07-25 13:34:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:48,118 INFO L225 Difference]: With dead ends: 443 [2018-07-25 13:34:48,118 INFO L226 Difference]: Without dead ends: 442 [2018-07-25 13:34:48,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:34:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-07-25 13:34:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2018-07-25 13:34:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2018-07-25 13:34:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 442 transitions. [2018-07-25 13:34:48,123 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 442 transitions. Word has length 439 [2018-07-25 13:34:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:48,123 INFO L472 AbstractCegarLoop]: Abstraction has 442 states and 442 transitions. [2018-07-25 13:34:48,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 13:34:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 442 transitions. [2018-07-25 13:34:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-07-25 13:34:48,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:48,125 INFO L354 BasicCegarLoop]: trace histogram [220, 219, 1, 1] [2018-07-25 13:34:48,125 INFO L415 AbstractCegarLoop]: === Iteration 220 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:48,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2033796650, now seen corresponding path program 219 times [2018-07-25 13:34:48,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:49,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:49,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 13:34:49,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 13:34:49,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 13:34:49,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 13:34:49,825 INFO L87 Difference]: Start difference. First operand 442 states and 442 transitions. Second operand 222 states. [2018-07-25 13:34:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:52,911 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-07-25 13:34:52,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 13:34:52,911 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 441 [2018-07-25 13:34:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:52,912 INFO L225 Difference]: With dead ends: 445 [2018-07-25 13:34:52,912 INFO L226 Difference]: Without dead ends: 444 [2018-07-25 13:34:52,915 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 13:34:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-07-25 13:34:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2018-07-25 13:34:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2018-07-25 13:34:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 444 transitions. [2018-07-25 13:34:52,919 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 444 transitions. Word has length 441 [2018-07-25 13:34:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:52,919 INFO L472 AbstractCegarLoop]: Abstraction has 444 states and 444 transitions. [2018-07-25 13:34:52,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 13:34:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 444 transitions. [2018-07-25 13:34:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-25 13:34:52,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:52,921 INFO L354 BasicCegarLoop]: trace histogram [221, 220, 1, 1] [2018-07-25 13:34:52,921 INFO L415 AbstractCegarLoop]: === Iteration 221 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash -268459880, now seen corresponding path program 220 times [2018-07-25 13:34:52,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:54,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:54,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 13:34:54,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 13:34:54,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 13:34:54,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 13:34:54,706 INFO L87 Difference]: Start difference. First operand 444 states and 444 transitions. Second operand 223 states. [2018-07-25 13:34:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:57,224 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-07-25 13:34:57,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 13:34:57,224 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 443 [2018-07-25 13:34:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:57,225 INFO L225 Difference]: With dead ends: 447 [2018-07-25 13:34:57,225 INFO L226 Difference]: Without dead ends: 446 [2018-07-25 13:34:57,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 13:34:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2018-07-25 13:34:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2018-07-25 13:34:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-07-25 13:34:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2018-07-25 13:34:57,231 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 443 [2018-07-25 13:34:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:57,231 INFO L472 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2018-07-25 13:34:57,231 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 13:34:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2018-07-25 13:34:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-07-25 13:34:57,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:57,233 INFO L354 BasicCegarLoop]: trace histogram [222, 221, 1, 1] [2018-07-25 13:34:57,233 INFO L415 AbstractCegarLoop]: === Iteration 222 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -291905830, now seen corresponding path program 221 times [2018-07-25 13:34:57,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:59,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:59,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 13:34:59,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 13:34:59,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 13:34:59,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 13:34:59,142 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 224 states. [2018-07-25 13:35:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:00,703 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-07-25 13:35:00,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 13:35:00,703 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 445 [2018-07-25 13:35:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:00,704 INFO L225 Difference]: With dead ends: 449 [2018-07-25 13:35:00,704 INFO L226 Difference]: Without dead ends: 448 [2018-07-25 13:35:00,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 13:35:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-07-25 13:35:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2018-07-25 13:35:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2018-07-25 13:35:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 448 transitions. [2018-07-25 13:35:00,709 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 448 transitions. Word has length 445 [2018-07-25 13:35:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:00,709 INFO L472 AbstractCegarLoop]: Abstraction has 448 states and 448 transitions. [2018-07-25 13:35:00,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 13:35:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 448 transitions. [2018-07-25 13:35:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-07-25 13:35:00,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:00,711 INFO L354 BasicCegarLoop]: trace histogram [223, 222, 1, 1] [2018-07-25 13:35:00,711 INFO L415 AbstractCegarLoop]: === Iteration 223 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:00,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1348627300, now seen corresponding path program 222 times [2018-07-25 13:35:00,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:02,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:02,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 13:35:02,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 13:35:02,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 13:35:02,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 13:35:02,651 INFO L87 Difference]: Start difference. First operand 448 states and 448 transitions. Second operand 225 states. [2018-07-25 13:35:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:03,808 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-07-25 13:35:03,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 13:35:03,808 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 447 [2018-07-25 13:35:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:03,809 INFO L225 Difference]: With dead ends: 451 [2018-07-25 13:35:03,809 INFO L226 Difference]: Without dead ends: 450 [2018-07-25 13:35:03,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 13:35:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-07-25 13:35:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2018-07-25 13:35:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2018-07-25 13:35:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 450 transitions. [2018-07-25 13:35:03,817 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 450 transitions. Word has length 447 [2018-07-25 13:35:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:03,817 INFO L472 AbstractCegarLoop]: Abstraction has 450 states and 450 transitions. [2018-07-25 13:35:03,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 13:35:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 450 transitions. [2018-07-25 13:35:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-07-25 13:35:03,818 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:03,818 INFO L354 BasicCegarLoop]: trace histogram [224, 223, 1, 1] [2018-07-25 13:35:03,819 INFO L415 AbstractCegarLoop]: === Iteration 224 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1049289182, now seen corresponding path program 223 times [2018-07-25 13:35:03,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:05,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:05,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 13:35:05,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 13:35:05,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 13:35:05,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 13:35:05,787 INFO L87 Difference]: Start difference. First operand 450 states and 450 transitions. Second operand 226 states. Received shutdown request... [2018-07-25 13:35:06,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:35:06,237 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:35:06,244 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:35:06,244 INFO L202 PluginConnector]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:35:06 BoogieIcfgContainer [2018-07-25 13:35:06,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:35:06,245 INFO L168 Benchmark]: Toolchain (without parser) took 252761.56 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -405.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:35:06,247 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:06,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:06,248 INFO L168 Benchmark]: Boogie Preprocessor took 21.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:35:06,248 INFO L168 Benchmark]: RCFGBuilder took 235.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:35:06,249 INFO L168 Benchmark]: TraceAbstraction took 252455.29 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -416.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:35:06,251 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 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 235.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252455.29 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -416.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 18). Cancelled while BasicCegarLoop was constructing difference of abstraction (450states) and interpolant automaton (currently 148 states, 226 states before enhancement), while ReachableStatesComputation was computing reachable states (291 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. TIMEOUT Result, 252.3s OverallTime, 224 OverallIterations, 224 TraceHistogramMax, 114.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 672 SDtfs, 1 SDslu, 25121 SDs, 0 SdLazy, 36802 SolverSat, 473 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 223 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 27.5s SatisfiabilityAnalysisTime, 97.8s InterpolantComputationTime, 50624 NumberOfCodeBlocks, 50624 NumberOfCodeBlocksAsserted, 224 NumberOfCheckSat, 50400 ConstructedInterpolants, 0 QuantifiedInterpolants, 45259200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 224 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3746400 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/LargeConstant-ForwardSuccess.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-35-06-269.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LargeConstant-ForwardSuccess.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-35-06-269.csv Completed graceful shutdown