java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:51:47,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:51:47,601 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:51:47,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:51:47,620 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:51:47,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:51:47,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:51:47,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:51:47,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:51:47,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:51:47,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:51:47,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:51:47,639 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:51:47,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:51:47,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:51:47,643 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:51:47,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:51:47,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:51:47,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:51:47,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:51:47,659 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:51:47,661 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:51:47,666 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:51:47,666 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:51:47,667 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:51:47,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:51:47,670 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:51:47,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:51:47,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:51:47,674 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:51:47,675 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:51:47,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:51:47,681 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:51:47,701 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:51:47,701 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:51:47,703 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:51:47,703 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:51:47,703 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:51:47,703 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:51:47,704 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:51:47,704 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:51:47,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:51:47,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:51:47,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:51:47,779 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:51:47,780 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:51:47,780 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl [2018-07-25 08:51:47,781 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl' [2018-07-25 08:51:47,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:51:47,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:51:47,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:51:47,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:51:47,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:51:47,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,881 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:51:47,882 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:51:47,882 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:51:47,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:51:47,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:51:47,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:51:47,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:51:47,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:47,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:51:47,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:51:47,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:51:47,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:51:47,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/1) ... [2018-07-25 08:51:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:51:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:51:48,115 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:51:48,116 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:51:48 BoogieIcfgContainer [2018-07-25 08:51:48,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:51:48,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:51:48,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:51:48,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:51:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:47" (1/2) ... [2018-07-25 08:51:48,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a94b3f2 and model type LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:51:48, skipping insertion in model container [2018-07-25 08:51:48,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:51:48" (2/2) ... [2018-07-25 08:51:48,125 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-Reduced.bpl [2018-07-25 08:51:48,136 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:51:48,145 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:51:48,198 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:51:48,199 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:51:48,199 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:51:48,199 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:51:48,199 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:51:48,200 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:51:48,200 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:51:48,200 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:51:48,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:51:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:51:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:51:48,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,232 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:51:48,233 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 08:51:48,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,314 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:51:48,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:51:48,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:51:48,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:51:48,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:51:48,335 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 08:51:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,365 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:51:48,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:51:48,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:51:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,378 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:51:48,378 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:51:48,382 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 08:51:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:51:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:51:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:51:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:51:48,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 08:51:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,422 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:51:48,422 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:51:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:51:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:51:48,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,423 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:51:48,424 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 08:51:48,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 08:51:48,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:51:48,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:51:48,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:51:48,453 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 08:51:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,474 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:51:48,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:51:48,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 08:51:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,475 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:51:48,475 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:51:48,477 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 08:51:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:51:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:51:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:51:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:51:48,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 08:51:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,481 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:51:48,481 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:51:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:51:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:51:48,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,482 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 08:51:48,482 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 08:51:48,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:51:48,557 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:51:48,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:51:48,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:51:48,558 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 08:51:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,585 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:51:48,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:51:48,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 08:51:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,586 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:51:48,587 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:51:48,587 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 08:51:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:51:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:51:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:51:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:51:48,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 08:51:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,592 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:51:48,592 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:51:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:51:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:51:48,593 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,593 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 08:51:48,593 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,593 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 08:51:48,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:51:48,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:51:48,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:51:48,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:51:48,649 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 08:51:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,677 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:51:48,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:51:48,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 08:51:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,678 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:51:48,679 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:51:48,680 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 08:51:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:51:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:51:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:51:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:51:48,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 08:51:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,686 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:51:48,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:51:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:51:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:51:48,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,687 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 08:51:48,688 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 08:51:48,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:51:48,754 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:51:48,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:51:48,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:51:48,755 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 08:51:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,779 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:51:48,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:51:48,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 08:51:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,780 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:51:48,780 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:51:48,781 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 08:51:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:51:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:51:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:51:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:51:48,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 08:51:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,786 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:51:48,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:51:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:51:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:51:48,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,787 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 08:51:48,787 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 08:51:48,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:51:48,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:51:48,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:51:48,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:51:48,835 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 08:51:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,858 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:51:48,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:51:48,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 08:51:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,860 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:51:48,860 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:51:48,861 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 08:51:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:51:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:51:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:51:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:51:48,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 08:51:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,866 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:51:48,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:51:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:51:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:51:48,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,868 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 08:51:48,868 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 08:51:48,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:51:48,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:51:48,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:51:48,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:51:48,942 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 08:51:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,992 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:51:48,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:51:48,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 08:51:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,994 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:51:48,994 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:51:48,995 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 08:51:48,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:51:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:51:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:51:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:51:49,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 08:51:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,001 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:51:49,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:51:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:51:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:51:49,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,003 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 08:51:49,003 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 08:51:49,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:51:49,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:51:49,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:51:49,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:51:49,054 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 08:51:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,098 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:51:49,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:51:49,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 08:51:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,099 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:51:49,099 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:51:49,100 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 08:51:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:51:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:51:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:51:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:51:49,105 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 08:51:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,105 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:51:49,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:51:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:51:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:51:49,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,107 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 08:51:49,107 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 08:51:49,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:51:49,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:51:49,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:51:49,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:51:49,206 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 08:51:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,234 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:51:49,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:51:49,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 08:51:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,237 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:51:49,237 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:51:49,237 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 08:51:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:51:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:51:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:51:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:51:49,249 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 08:51:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,251 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:51:49,251 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:51:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:51:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:51:49,252 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,253 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 08:51:49,253 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 08:51:49,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:51:49,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:51:49,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:51:49,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:51:49,319 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 08:51:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,356 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:51:49,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:51:49,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 08:51:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,357 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:51:49,357 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:51:49,358 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 08:51:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:51:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:51:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:51:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:51:49,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 08:51:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,364 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:51:49,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:51:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:51:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:51:49,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,366 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 08:51:49,366 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 08:51:49,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:51:49,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:51:49,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:51:49,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:51:49,419 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 08:51:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,441 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:51:49,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:51:49,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 08:51:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,443 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:51:49,443 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:51:49,445 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 08:51:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:51:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:51:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:51:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:51:49,456 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 08:51:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,456 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:51:49,456 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:51:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:51:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:51:49,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,457 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 08:51:49,458 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 08:51:49,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:51:49,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:51:49,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:51:49,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:51:49,538 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 08:51:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,577 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:51:49,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:51:49,577 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 08:51:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,578 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:51:49,578 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:51:49,579 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 08:51:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:51:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:51:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:51:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:51:49,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 08:51:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,586 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:51:49,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:51:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:51:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:51:49,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,588 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 08:51:49,588 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 08:51:49,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:51:49,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:51:49,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:51:49,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:51:49,651 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 08:51:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,681 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:51:49,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:51:49,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 08:51:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,683 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:51:49,683 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:51:49,684 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 08:51:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:51:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:51:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:51:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:51:49,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 08:51:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,694 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:51:49,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:51:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:51:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:51:49,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,702 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 08:51:49,702 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 08:51:49,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:51:49,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:51:49,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:51:49,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:51:49,766 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 08:51:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,810 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:51:49,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:51:49,810 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 08:51:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,811 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:51:49,813 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:51:49,814 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 08:51:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:51:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:51:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:51:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:51:49,825 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 08:51:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,825 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:51:49,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:51:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:51:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:51:49,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,827 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 08:51:49,827 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 08:51:49,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:51:49,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:51:49,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:51:49,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:51:49,915 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 08:51:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,954 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:51:49,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:51:49,954 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 08:51:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,957 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:51:49,957 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:51:49,958 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 08:51:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:51:49,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:51:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:51:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:51:49,969 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 08:51:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,969 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:51:49,969 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:51:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:51:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:51:49,970 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,970 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 08:51:49,971 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,971 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 08:51:49,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:51:50,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:51:50,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:51:50,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:51:50,053 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 08:51:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,076 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:51:50,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:51:50,076 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 08:51:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,077 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:51:50,077 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:51:50,078 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 08:51:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:51:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:51:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:51:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:51:50,083 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 08:51:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,084 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:51:50,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:51:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:51:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:51:50,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,085 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 08:51:50,086 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 08:51:50,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:51:50,177 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:51:50,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:51:50,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:51:50,179 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 08:51:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,216 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:51:50,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:51:50,217 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 08:51:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,218 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:51:50,218 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:51:50,219 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 08:51:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:51:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:51:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:51:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:51:50,226 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 08:51:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,228 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:51:50,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:51:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:51:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:51:50,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,229 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 08:51:50,229 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 08:51:50,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:51:50,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:51:50,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:51:50,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:51:50,326 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 08:51:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,355 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:51:50,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:51:50,355 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 08:51:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,356 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:51:50,356 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:51:50,357 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 08:51:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:51:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:51:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:51:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:51:50,362 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 08:51:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,363 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:51:50,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:51:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:51:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:51:50,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,364 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 08:51:50,364 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 08:51:50,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:51:50,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:51:50,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:51:50,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:51:50,464 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 08:51:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,494 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:51:50,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:51:50,495 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 08:51:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,495 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:51:50,496 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:51:50,496 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 08:51:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:51:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:51:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:51:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:51:50,502 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 08:51:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,503 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:51:50,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:51:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:51:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:51:50,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,504 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 08:51:50,504 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,504 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 08:51:50,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:51:50,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:51:50,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:51:50,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:51:50,623 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 08:51:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,660 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:51:50,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:51:50,661 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 08:51:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,662 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:51:50,662 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:51:50,662 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 08:51:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:51:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:51:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:51:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:51:50,673 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 08:51:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,674 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:51:50,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:51:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:51:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:51:50,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,675 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 08:51:50,675 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 08:51:50,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:51:50,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:51:50,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:51:50,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:51:50,792 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 08:51:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,823 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:51:50,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:51:50,824 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 08:51:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,824 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:51:50,825 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:51:50,825 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 08:51:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:51:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:51:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:51:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:51:50,839 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 08:51:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,840 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:51:50,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:51:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:51:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:51:50,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,844 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 08:51:50,845 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 08:51:50,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:51:50,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:51:50,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:51:50,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:51:50,962 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 08:51:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,989 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:51:50,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:51:50,990 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 08:51:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,992 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:51:50,992 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:51:50,993 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 08:51:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:51:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:51:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:51:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:51:50,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 08:51:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,998 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:51:50,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:51:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:51:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:51:50,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,999 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 08:51:51,000 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 08:51:51,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:51:51,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:51:51,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:51:51,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:51:51,135 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 08:51:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,171 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:51:51,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:51:51,171 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 08:51:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,172 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:51:51,172 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:51:51,173 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 08:51:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:51:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:51:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:51:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:51:51,178 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 08:51:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,179 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:51:51,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:51:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:51:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:51:51,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,180 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 08:51:51,180 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,181 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 08:51:51,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:51:51,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:51:51,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:51:51,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:51:51,309 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 08:51:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,341 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:51:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:51:51,341 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 08:51:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,342 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:51:51,342 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:51:51,343 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 08:51:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:51:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:51:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:51:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:51:51,351 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 08:51:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,352 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:51:51,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:51:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:51:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:51:51,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,353 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 08:51:51,353 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,354 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 08:51:51,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:51:51,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:51:51,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:51:51,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:51:51,496 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 08:51:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,533 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:51:51,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:51:51,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 08:51:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,534 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:51:51,534 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:51:51,535 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 08:51:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:51:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:51:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:51:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:51:51,540 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 08:51:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,541 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:51:51,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:51:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:51:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:51:51,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,542 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 08:51:51,542 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 08:51:51,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:51:51,699 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:51:51,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:51:51,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:51:51,701 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 08:51:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,729 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:51:51,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:51:51,730 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 08:51:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,731 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:51:51,731 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:51:51,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:51:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:51:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:51:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:51:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:51:51,739 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 08:51:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,739 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:51:51,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:51:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:51:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:51:51,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,740 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 08:51:51,740 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 08:51:51,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:51:51,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:51:51,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:51:51,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:51:51,905 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 08:51:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,938 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:51:51,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:51:51,939 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 08:51:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,940 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:51:51,940 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:51:51,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:51:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:51:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:51:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:51:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:51:51,948 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 08:51:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,948 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:51:51,948 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:51:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:51:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:51:51,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,949 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 08:51:51,950 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 08:51:51,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:52,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:51:52,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:51:52,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:51:52,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:51:52,187 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 08:51:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,219 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:51:52,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:51:52,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 08:51:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,220 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:51:52,220 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:51:52,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:51:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:51:52,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:51:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:51:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:51:52,226 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 08:51:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,226 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:51:52,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:51:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:51:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:51:52,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,227 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 08:51:52,227 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,227 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 08:51:52,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:52,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:51:52,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:51:52,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:51:52,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:51:52,392 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 08:51:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,427 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:51:52,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:51:52,428 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 08:51:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,428 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:51:52,429 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:51:52,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:51:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:51:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:51:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:51:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:51:52,435 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 08:51:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,435 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:51:52,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:51:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:51:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:51:52,436 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,436 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 08:51:52,437 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,437 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 08:51:52,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:52,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:51:52,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:51:52,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:51:52,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:51:52,599 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 08:51:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,634 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:51:52,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:51:52,634 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 08:51:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,635 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:51:52,635 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:51:52,636 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 08:51:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:51:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:51:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:51:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:51:52,641 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 08:51:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,641 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:51:52,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:51:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:51:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:51:52,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,642 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 08:51:52,642 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 08:51:52,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:52,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:51:52,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:51:52,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:51:52,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:51:52,822 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 08:51:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,855 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:51:52,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:51:52,855 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 08:51:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,856 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:51:52,856 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:51:52,858 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 08:51:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:51:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:51:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:51:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:51:52,861 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 08:51:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,862 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:51:52,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:51:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:51:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:51:52,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,862 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 08:51:52,863 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 08:51:52,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:51:53,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:51:53,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:51:53,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:51:53,045 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 08:51:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,076 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:51:53,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:51:53,076 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 08:51:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,077 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:51:53,077 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:51:53,078 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 08:51:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:51:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:51:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:51:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:51:53,082 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 08:51:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,083 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:51:53,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:51:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:51:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:51:53,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,084 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 08:51:53,084 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 08:51:53,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:51:53,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:51:53,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:51:53,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:51:53,253 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 08:51:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,292 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:51:53,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:51:53,292 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 08:51:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,294 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:51:53,294 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:51:53,295 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 08:51:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:51:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:51:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:51:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:51:53,300 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 08:51:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,300 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:51:53,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:51:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:51:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:51:53,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,301 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 08:51:53,302 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 08:51:53,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:51:53,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:51:53,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:51:53,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:51:53,485 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 08:51:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,524 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:51:53,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:51:53,524 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 08:51:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,525 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:51:53,525 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:51:53,526 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 08:51:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:51:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:51:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:51:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:51:53,532 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 08:51:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,532 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:51:53,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:51:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:51:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:51:53,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,533 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 08:51:53,533 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,533 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 08:51:53,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:51:53,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:51:53,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:51:53,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:51:53,722 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 08:51:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,755 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:51:53,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:51:53,755 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 08:51:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,756 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:51:53,756 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:51:53,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:51:53,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:51:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:51:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:51:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:51:53,761 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 08:51:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,761 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:51:53,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:51:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:51:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:51:53,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,762 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 08:51:53,763 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 08:51:53,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,946 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:51:53,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:51:53,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:51:53,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:51:53,948 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 08:51:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,982 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:51:53,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:51:53,982 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 08:51:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,983 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:51:53,983 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:51:53,984 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 08:51:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:51:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:51:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:51:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:51:53,988 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 08:51:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,989 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:51:53,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:51:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:51:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:51:53,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,990 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 08:51:53,990 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 08:51:53,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:54,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:51:54,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:51:54,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:51:54,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:51:54,191 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 08:51:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,237 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:51:54,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:51:54,237 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 08:51:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,238 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:51:54,238 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:51:54,240 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 08:51:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:51:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:51:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:51:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:51:54,244 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 08:51:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,245 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:51:54,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:51:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:51:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:51:54,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,246 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 08:51:54,246 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 08:51:54,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:54,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:51:54,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:51:54,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:51:54,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:51:54,484 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 08:51:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,524 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:51:54,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:51:54,525 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 08:51:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,526 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:51:54,526 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:51:54,527 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 08:51:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:51:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:51:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:51:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:51:54,533 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 08:51:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,534 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:51:54,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:51:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:51:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:51:54,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,535 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 08:51:54,535 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 08:51:54,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:54,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:51:54,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:51:54,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:51:54,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:51:54,803 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 08:51:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,844 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:51:54,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:51:54,844 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 08:51:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,845 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:51:54,845 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:51:54,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:51:54,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:51:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:51:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:51:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:51:54,850 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 08:51:54,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,851 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:51:54,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:51:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:51:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:51:54,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,852 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 08:51:54,852 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 08:51:54,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:55,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:51:55,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:51:55,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:51:55,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:51:55,050 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 08:51:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,093 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:51:55,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:51:55,093 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 08:51:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,094 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:51:55,094 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:51:55,095 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 08:51:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:51:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:51:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:51:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:51:55,100 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 08:51:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,100 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:51:55,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:51:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:51:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:51:55,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,101 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 08:51:55,102 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 08:51:55,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:55,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:51:55,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:51:55,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:51:55,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:51:55,293 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 08:51:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,335 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:51:55,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:51:55,335 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 08:51:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,336 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:51:55,336 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:51:55,337 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 08:51:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:51:55,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:51:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:51:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:51:55,342 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 08:51:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,342 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:51:55,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:51:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:51:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:51:55,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,343 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 08:51:55,344 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 08:51:55,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:55,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:51:55,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:51:55,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:51:55,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:51:55,535 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 08:51:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,578 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:51:55,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:51:55,578 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 08:51:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,579 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:51:55,579 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:51:55,580 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 08:51:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:51:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:51:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:51:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:51:55,585 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 08:51:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,585 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:51:55,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:51:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:51:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:51:55,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,586 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 08:51:55,586 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 08:51:55,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:55,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:51:55,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:51:55,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:51:55,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:51:55,788 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 08:51:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,835 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:51:55,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:51:55,836 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 08:51:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,836 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:51:55,837 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:51:55,841 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 08:51:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:51:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:51:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:51:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:51:55,848 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 08:51:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,848 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:51:55,855 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:51:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:51:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:51:55,856 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,856 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 08:51:55,856 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 08:51:55,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:56,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:51:56,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:51:56,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:51:56,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:51:56,067 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 08:51:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,115 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:51:56,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:51:56,115 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 08:51:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,116 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:51:56,116 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:51:56,118 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 08:51:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:51:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:51:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:51:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:51:56,125 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 08:51:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,126 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:51:56,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:51:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:51:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:51:56,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,127 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 08:51:56,128 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,128 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 08:51:56,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:56,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:51:56,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:51:56,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:51:56,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:51:56,349 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 08:51:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,405 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:51:56,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:51:56,405 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 08:51:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,406 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:51:56,406 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:51:56,407 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 08:51:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:51:56,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:51:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:51:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:51:56,420 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 08:51:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,420 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:51:56,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:51:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:51:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:51:56,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,423 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 08:51:56,423 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 08:51:56,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:56,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:51:56,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:51:56,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:51:56,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:51:56,670 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 08:51:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,717 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:51:56,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:51:56,717 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 08:51:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,718 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:51:56,718 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:51:56,719 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 08:51:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:51:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:51:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:51:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:51:56,728 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 08:51:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,729 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:51:56,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:51:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:51:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:51:56,730 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,730 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 08:51:56,730 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 08:51:56,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:57,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:51:57,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:51:57,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:51:57,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:51:57,033 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 08:51:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,078 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:51:57,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:51:57,079 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 08:51:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,080 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:51:57,080 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:51:57,081 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:51:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:51:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:51:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:51:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:51:57,087 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 08:51:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,087 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:51:57,088 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:51:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:51:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:51:57,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,089 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 08:51:57,089 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 08:51:57,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:57,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:51:57,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:51:57,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:51:57,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:51:57,400 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 08:51:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,444 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:51:57,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:51:57,444 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 08:51:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,445 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:51:57,445 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:51:57,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:51:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:51:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:51:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:51:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:51:57,453 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 08:51:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,453 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:51:57,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:51:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:51:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:51:57,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,454 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 08:51:57,454 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 08:51:57,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:57,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:51:57,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:51:57,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:51:57,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:51:57,688 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 08:51:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,734 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:51:57,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:51:57,735 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 08:51:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,735 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:51:57,736 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:51:57,737 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 08:51:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:51:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:51:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:51:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:51:57,743 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 08:51:57,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,743 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:51:57,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:51:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:51:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:51:57,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,745 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 08:51:57,745 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 08:51:57,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:57,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:51:57,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:51:57,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:51:57,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:51:57,969 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 08:51:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,021 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:51:58,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:51:58,021 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 08:51:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,022 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:51:58,022 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:51:58,023 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 08:51:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:51:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:51:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:51:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:51:58,029 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 08:51:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,029 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:51:58,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:51:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:51:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:51:58,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,030 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 08:51:58,030 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 08:51:58,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:58,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:51:58,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:51:58,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:51:58,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:51:58,267 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 08:51:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,322 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:51:58,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:51:58,323 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 08:51:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,324 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:51:58,324 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:51:58,325 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 08:51:58,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:51:58,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:51:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:51:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:51:58,330 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 08:51:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,331 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:51:58,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:51:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:51:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:51:58,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,332 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 08:51:58,332 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 08:51:58,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:58,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:51:58,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:51:58,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:51:58,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:51:58,561 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 08:51:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,613 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:51:58,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:51:58,614 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 08:51:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,615 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:51:58,615 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:51:58,616 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 08:51:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:51:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:51:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:51:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:51:58,621 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 08:51:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,622 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:51:58,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:51:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:51:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:51:58,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,623 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 08:51:58,623 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 08:51:58,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:58,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:51:58,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:51:58,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:51:58,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:51:58,871 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 08:51:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,938 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:51:58,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:51:58,939 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 08:51:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,940 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:51:58,940 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:51:58,941 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 08:51:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:51:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:51:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:51:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:51:58,946 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 08:51:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,947 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:51:58,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:51:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:51:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:51:58,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,948 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 08:51:58,948 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 08:51:58,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:59,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:51:59,227 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:51:59,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:51:59,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:51:59,229 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 08:51:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,299 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:51:59,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:51:59,300 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 08:51:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,301 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:51:59,301 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:51:59,302 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:51:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:51:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:51:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:51:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:51:59,307 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 08:51:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,308 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:51:59,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:51:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:51:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:51:59,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,309 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 08:51:59,309 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 08:51:59,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:59,612 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:51:59,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:51:59,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:51:59,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:51:59,614 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 08:51:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,691 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:51:59,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:51:59,691 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 08:51:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,693 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:51:59,693 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:51:59,694 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:51:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:51:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:51:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:51:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:51:59,701 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 08:51:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,702 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:51:59,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:51:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:51:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:51:59,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,704 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 08:51:59,704 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 08:51:59,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:00,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:52:00,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:52:00,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:52:00,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:52:00,100 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 08:52:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:00,191 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:52:00,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:52:00,191 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 08:52:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:00,192 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:52:00,192 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:52:00,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:52:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:52:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:52:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:52:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:52:00,200 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 08:52:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:00,200 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:52:00,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:52:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:52:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:52:00,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:00,202 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 08:52:00,202 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:00,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 08:52:00,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:00,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:52:00,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:52:00,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:52:00,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:52:00,567 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 08:52:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:00,653 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:52:00,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:52:00,653 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 08:52:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:00,654 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:52:00,654 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:52:00,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:52:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:52:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:52:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:52:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:52:00,663 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 08:52:00,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:00,663 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:52:00,663 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:52:00,663 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:52:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:52:00,664 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:00,665 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 08:52:00,665 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 08:52:00,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:00,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:52:00,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:52:00,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:52:00,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:52:00,949 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 08:52:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,013 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:52:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:52:01,013 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 08:52:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,014 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:52:01,014 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:52:01,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:52:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:52:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:52:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:52:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:52:01,023 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 08:52:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,023 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:52:01,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:52:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:52:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:52:01,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,025 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 08:52:01,025 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 08:52:01,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:01,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:01,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:52:01,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:52:01,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:52:01,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:52:01,301 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 08:52:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,382 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:52:01,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:52:01,382 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 08:52:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,384 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:52:01,384 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:52:01,385 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 08:52:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:52:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:52:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:52:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:52:01,390 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 08:52:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,391 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:52:01,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:52:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:52:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:52:01,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,392 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 08:52:01,393 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 08:52:01,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:01,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:01,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:52:01,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:52:01,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:52:01,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:52:01,686 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 08:52:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,752 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:52:01,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:52:01,752 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 08:52:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,753 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:52:01,753 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:52:01,754 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 08:52:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:52:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:52:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:52:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:52:01,760 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 08:52:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,760 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:52:01,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:52:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:52:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:52:01,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,762 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 08:52:01,762 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 08:52:01,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:02,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:52:02,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:52:02,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:52:02,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:52:02,055 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 08:52:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,132 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:52:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:52:02,133 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 08:52:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,134 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:52:02,134 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:52:02,135 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 08:52:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:52:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:52:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:52:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:52:02,140 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 08:52:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,140 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:52:02,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:52:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:52:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:52:02,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,142 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 08:52:02,142 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 08:52:02,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:02,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:52:02,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:52:02,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:52:02,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:52:02,442 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 08:52:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,504 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:52:02,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:52:02,504 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 08:52:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,505 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:52:02,505 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:52:02,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:52:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:52:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:52:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:52:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:52:02,511 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 08:52:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,512 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:52:02,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:52:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:52:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:52:02,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,513 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 08:52:02,513 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 08:52:02,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:02,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:52:02,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:52:02,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:52:02,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:52:02,810 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 08:52:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,890 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:52:02,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:52:02,890 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 08:52:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,891 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:52:02,892 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:52:02,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:52:02,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:52:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:52:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:52:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:52:02,898 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 08:52:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,898 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:52:02,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:52:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:52:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:52:02,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,900 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 08:52:02,900 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 08:52:02,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:03,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:52:03,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:52:03,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:52:03,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:52:03,169 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 08:52:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,234 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:52:03,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:52:03,234 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 08:52:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,235 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:52:03,235 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:52:03,236 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 08:52:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:52:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:52:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:52:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:52:03,244 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 08:52:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,245 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:52:03,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:52:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:52:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:52:03,248 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,248 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 08:52:03,249 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 08:52:03,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:03,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:52:03,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:52:03,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:52:03,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:52:03,511 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 08:52:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,587 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:52:03,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:52:03,588 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 08:52:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,589 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:52:03,589 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:52:03,590 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 08:52:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:52:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:52:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:52:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:52:03,595 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 08:52:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,596 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:52:03,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:52:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:52:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:52:03,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,597 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 08:52:03,597 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 08:52:03,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:03,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:52:03,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:52:03,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:52:03,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:52:03,859 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 08:52:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,946 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:52:03,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:52:03,946 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 08:52:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,947 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:52:03,947 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:52:03,949 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 08:52:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:52:03,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:52:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:52:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:52:03,954 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 08:52:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,954 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:52:03,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:52:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:52:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:52:03,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,956 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 08:52:03,956 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 08:52:03,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:04,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:04,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:52:04,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:52:04,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:52:04,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:52:04,241 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 08:52:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:04,321 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:52:04,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:52:04,322 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 08:52:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:04,323 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:52:04,323 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:52:04,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:52:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:52:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:52:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:52:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:52:04,329 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 08:52:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:04,330 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:52:04,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:52:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:52:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:52:04,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:04,331 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 08:52:04,331 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 08:52:04,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:04,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:04,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:52:04,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:52:04,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:52:04,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:52:04,660 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 08:52:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:04,727 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:52:04,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:52:04,727 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 08:52:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:04,729 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:52:04,729 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:52:04,730 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 08:52:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:52:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:52:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:52:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:52:04,736 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 08:52:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:04,736 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:52:04,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:52:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:52:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:52:04,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:04,738 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 08:52:04,738 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 08:52:04,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:05,149 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,149 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:52:05,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:52:05,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:52:05,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:52:05,151 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 08:52:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,206 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:52:05,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:52:05,206 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 08:52:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,207 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:52:05,207 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:52:05,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:52:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:52:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:52:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:52:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:52:05,212 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 08:52:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,213 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:52:05,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:52:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:52:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:52:05,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,214 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 08:52:05,214 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 08:52:05,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:05,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:52:05,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:52:05,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:52:05,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:52:05,452 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 08:52:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,511 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:52:05,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:52:05,511 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 08:52:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,512 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:52:05,512 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:52:05,513 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 08:52:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:52:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:52:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:52:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:52:05,517 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 08:52:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,518 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:52:05,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:52:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:52:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:52:05,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,519 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 08:52:05,519 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 08:52:05,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:05,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:52:05,814 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:52:05,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:52:05,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:52:05,815 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 08:52:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,883 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:52:05,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:52:05,883 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 08:52:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,885 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:52:05,885 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:52:05,885 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 08:52:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:52:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:52:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:52:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:52:05,890 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 08:52:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,890 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:52:05,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:52:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:52:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:52:05,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,891 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 08:52:05,892 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 08:52:05,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:06,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:06,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:52:06,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:52:06,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:52:06,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:52:06,211 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 08:52:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:06,309 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:52:06,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:52:06,309 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 08:52:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:06,311 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:52:06,311 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:52:06,312 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 08:52:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:52:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:52:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:52:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:52:06,317 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 08:52:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:06,317 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:52:06,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:52:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:52:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:52:06,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:06,318 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 08:52:06,319 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 08:52:06,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:06,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:06,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:52:06,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:52:06,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:52:06,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:52:06,651 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 08:52:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:06,746 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:52:06,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:52:06,746 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 08:52:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:06,748 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:52:06,748 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:52:06,748 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 08:52:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:52:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:52:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:52:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:52:06,753 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 08:52:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:06,753 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:52:06,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:52:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:52:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:52:06,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:06,754 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 08:52:06,755 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:06,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 08:52:06,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:07,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:07,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:52:07,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:52:07,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:52:07,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:52:07,069 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 08:52:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:07,175 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:52:07,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:52:07,175 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 08:52:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:07,176 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:52:07,176 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:52:07,177 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 08:52:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:52:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:52:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:52:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:52:07,183 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 08:52:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:07,184 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:52:07,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:52:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:52:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:52:07,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:07,185 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 08:52:07,185 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 08:52:07,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:07,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:07,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:52:07,570 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:52:07,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:52:07,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:52:07,571 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 08:52:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:07,645 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:52:07,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:52:07,645 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 08:52:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:07,646 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:52:07,646 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:52:07,647 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 08:52:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:52:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:52:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:52:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:52:07,653 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 08:52:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:07,653 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:52:07,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:52:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:52:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:52:07,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:07,654 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 08:52:07,654 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:07,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 08:52:07,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:08,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:52:08,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:52:08,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:52:08,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:52:08,018 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 08:52:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,161 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:52:08,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:52:08,161 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 08:52:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,162 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:52:08,162 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:52:08,163 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 08:52:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:52:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:52:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:52:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:52:08,168 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 08:52:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,168 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:52:08,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:52:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:52:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:52:08,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,170 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 08:52:08,170 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 08:52:08,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:08,479 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:52:08,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:52:08,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:52:08,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:52:08,480 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 08:52:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,544 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:52:08,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:52:08,545 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 08:52:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,546 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:52:08,546 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:52:08,547 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 08:52:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:52:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:52:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:52:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:52:08,551 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 08:52:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,552 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:52:08,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:52:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:52:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:52:08,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,553 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 08:52:08,553 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 08:52:08,553 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:08,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:52:08,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:52:08,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:52:08,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:52:08,834 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 08:52:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,932 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:52:08,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:52:08,932 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 08:52:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,933 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:52:08,934 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:52:08,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:52:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:52:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:52:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:52:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:52:08,939 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 08:52:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,940 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:52:08,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:52:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:52:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:52:08,941 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,941 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 08:52:08,941 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 08:52:08,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:09,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:09,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:52:09,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:52:09,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:52:09,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:52:09,218 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 08:52:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:09,325 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:52:09,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:52:09,325 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 08:52:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:09,326 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:52:09,326 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:52:09,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:52:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:52:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:52:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:52:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:52:09,332 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 08:52:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:09,332 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:52:09,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:52:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:52:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:52:09,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:09,333 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 08:52:09,333 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:09,333 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 08:52:09,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:09,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:09,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:52:09,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:52:09,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:52:09,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:52:09,695 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 08:52:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:09,753 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:52:09,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:52:09,754 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 08:52:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:09,755 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:52:09,755 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:52:09,755 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 08:52:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:52:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:52:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:52:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:52:09,762 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 08:52:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:09,762 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:52:09,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:52:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:52:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:52:09,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:09,764 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 08:52:09,764 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:09,764 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 08:52:09,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:10,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:52:10,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:52:10,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:52:10,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:52:10,097 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 08:52:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:10,197 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:52:10,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:52:10,197 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 08:52:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:10,198 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:52:10,198 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:52:10,199 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:52:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:52:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:52:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:52:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:52:10,204 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 08:52:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:10,204 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:52:10,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:52:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:52:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:52:10,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:10,206 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 08:52:10,206 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 08:52:10,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:10,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:52:10,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:52:10,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:52:10,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:52:10,493 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 08:52:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:10,597 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:52:10,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:52:10,598 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 08:52:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:10,599 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:52:10,599 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:52:10,599 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 08:52:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:52:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:52:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:52:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:52:10,603 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 08:52:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:10,604 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:52:10,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:52:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:52:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:52:10,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:10,606 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 08:52:10,606 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 08:52:10,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:10,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:52:10,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:52:10,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:52:10,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:52:10,887 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 08:52:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,004 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:52:11,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:52:11,004 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 08:52:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,005 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:52:11,005 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:52:11,006 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 08:52:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:52:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:52:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:52:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:52:11,010 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 08:52:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,011 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:52:11,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:52:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:52:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:52:11,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,012 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 08:52:11,012 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,012 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 08:52:11,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:11,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:11,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:52:11,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:52:11,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:52:11,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:52:11,303 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 08:52:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,419 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:52:11,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:52:11,419 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 08:52:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,420 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:52:11,420 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:52:11,421 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 08:52:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:52:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:52:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:52:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:52:11,425 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 08:52:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,425 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:52:11,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:52:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:52:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:52:11,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,426 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 08:52:11,426 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 08:52:11,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:11,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:11,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:52:11,775 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:52:11,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:52:11,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:52:11,776 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 08:52:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,900 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:52:11,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:52:11,900 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 08:52:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,901 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:52:11,901 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:52:11,902 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 08:52:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:52:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:52:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:52:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:52:11,907 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 08:52:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,908 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:52:11,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:52:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:52:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:52:11,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,909 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 08:52:11,909 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 08:52:11,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:12,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:52:12,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:52:12,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:52:12,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:12,253 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 08:52:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,371 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:52:12,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:52:12,371 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 08:52:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,372 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:52:12,373 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:52:12,373 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:52:12,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:52:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:52:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:52:12,377 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 08:52:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,377 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:52:12,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:52:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:52:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:52:12,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,379 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 08:52:12,379 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 08:52:12,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:12,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:52:12,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:52:12,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:52:12,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:52:12,666 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 08:52:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,734 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:52:12,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:52:12,734 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 08:52:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,735 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:52:12,735 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:52:12,736 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:52:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:52:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:52:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:52:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:52:12,740 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 08:52:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,740 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:52:12,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:52:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:52:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:52:12,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,741 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 08:52:12,742 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 08:52:12,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:13,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:52:13,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:52:13,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:52:13,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:52:13,075 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 08:52:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:13,188 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:52:13,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:52:13,188 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 08:52:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:13,190 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:52:13,190 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:52:13,190 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 08:52:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:52:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:52:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:52:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:52:13,195 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 08:52:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,196 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:52:13,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:52:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:52:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:52:13,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,197 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 08:52:13,197 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,198 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 08:52:13,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:13,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:52:13,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:52:13,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:52:13,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:52:13,528 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 08:52:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:13,646 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:52:13,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:52:13,646 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 08:52:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:13,647 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:52:13,647 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:52:13,648 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 08:52:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:52:13,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:52:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:52:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:52:13,653 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 08:52:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,654 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:52:13,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:52:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:52:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:52:13,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,655 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 08:52:13,655 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 08:52:13,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:13,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:52:13,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:52:13,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:52:13,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:52:13,980 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 08:52:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:14,057 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:52:14,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:52:14,057 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 08:52:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:14,058 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:52:14,058 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:52:14,059 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 08:52:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:52:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:52:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:52:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:52:14,065 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 08:52:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:14,065 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:52:14,065 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:52:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:52:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:52:14,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:14,066 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 08:52:14,067 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:14,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 08:52:14,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:14,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:14,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:52:14,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:52:14,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:52:14,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:14,628 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 08:52:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:14,772 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:52:14,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:52:14,773 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 08:52:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:14,774 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:52:14,774 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:52:14,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:52:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:52:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:52:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:52:14,780 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 08:52:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:14,780 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:52:14,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:52:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:52:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:52:14,781 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:14,781 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 08:52:14,781 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 08:52:14,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:15,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:15,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:52:15,123 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:52:15,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:52:15,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:52:15,124 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 08:52:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,204 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:52:15,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:52:15,204 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 08:52:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,205 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:52:15,205 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:52:15,205 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 08:52:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:52:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:52:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:52:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:52:15,211 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 08:52:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,211 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:52:15,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:52:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:52:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:52:15,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,213 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 08:52:15,213 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 08:52:15,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:15,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:15,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:52:15,571 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:52:15,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:52:15,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:52:15,573 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 08:52:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,717 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:52:15,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:52:15,718 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 08:52:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,719 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:52:15,719 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:52:15,719 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 08:52:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:52:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:52:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:52:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:52:15,723 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 08:52:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,724 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:52:15,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:52:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:52:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:52:15,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,724 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 08:52:15,725 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 08:52:15,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:16,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:16,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:52:16,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:52:16,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:52:16,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:52:16,139 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 08:52:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:16,404 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:52:16,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:52:16,404 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 08:52:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:16,405 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:52:16,405 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:52:16,406 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 08:52:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:52:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:52:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:52:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:52:16,412 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 08:52:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:16,413 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:52:16,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:52:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:52:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:52:16,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:16,414 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 08:52:16,414 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:16,415 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 08:52:16,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:17,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:17,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:52:17,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:52:17,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:52:17,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:52:17,016 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 08:52:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:17,174 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:52:17,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:52:17,174 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 08:52:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:17,175 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:52:17,175 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:52:17,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:52:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:52:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:52:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:52:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:52:17,183 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 08:52:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:17,183 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:52:17,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:52:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:52:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:52:17,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:17,185 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 08:52:17,185 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 08:52:17,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:17,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:17,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:52:17,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:52:17,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:52:17,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:52:17,589 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 08:52:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:17,669 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:52:17,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:52:17,669 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 08:52:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:17,670 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:52:17,670 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:52:17,671 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 08:52:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:52:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:52:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:52:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:52:17,675 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 08:52:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:17,676 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:52:17,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:52:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:52:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:52:17,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:17,678 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 08:52:17,678 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 08:52:17,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:18,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:18,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:52:18,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:52:18,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:52:18,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:52:18,056 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 08:52:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:18,162 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:52:18,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:52:18,162 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 08:52:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:18,163 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:52:18,163 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:52:18,164 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 08:52:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:52:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:52:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:52:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:52:18,169 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 08:52:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:18,169 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:52:18,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:52:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:52:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:52:18,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:18,171 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 08:52:18,171 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 08:52:18,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:18,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:18,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:52:18,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:52:18,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:52:18,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:52:18,552 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 08:52:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:18,688 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:52:18,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:52:18,688 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 08:52:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:18,690 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:52:18,690 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:52:18,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:52:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:52:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:52:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:52:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:52:18,697 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 08:52:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:18,697 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:52:18,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:52:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:52:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:52:18,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:18,699 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 08:52:18,699 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:18,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 08:52:18,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:19,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:19,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:52:19,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:52:19,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:52:19,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:52:19,191 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 08:52:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,296 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:52:19,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:52:19,296 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 08:52:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,297 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:52:19,297 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:52:19,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:52:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:52:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:52:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:52:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:52:19,303 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 08:52:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:19,304 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:52:19,304 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:52:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:52:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:52:19,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:19,305 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 08:52:19,305 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:19,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 08:52:19,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:19,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:19,798 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:52:19,798 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:52:19,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:52:19,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:52:19,800 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 08:52:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,906 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:52:19,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:52:19,906 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 08:52:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,907 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:52:19,907 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:52:19,908 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:52:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:52:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:52:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:52:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:52:19,914 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 08:52:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:19,914 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:52:19,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:52:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:52:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:52:19,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:19,916 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 08:52:19,916 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:19,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 08:52:19,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:20,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:20,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:52:20,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:52:20,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:52:20,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:52:20,447 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 08:52:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:20,604 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:52:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:52:20,605 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 08:52:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:20,606 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:52:20,606 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:52:20,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:52:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:52:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:52:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:52:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:52:20,612 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 08:52:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:20,612 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:52:20,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:52:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:52:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:52:20,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:20,614 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 08:52:20,614 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 08:52:20,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:21,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:21,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:52:21,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:52:21,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:52:21,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:52:21,031 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 08:52:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:21,231 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:52:21,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:52:21,231 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 08:52:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:21,232 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:52:21,232 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:52:21,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:52:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:52:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:52:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:52:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:52:21,239 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 08:52:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:21,239 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:52:21,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:52:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:52:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:52:21,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:21,240 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 08:52:21,240 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:21,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 08:52:21,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:21,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:21,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:52:21,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:52:21,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:52:21,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:52:21,646 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 08:52:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:21,755 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:52:21,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:52:21,755 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 08:52:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:21,756 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:52:21,756 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:52:21,757 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 08:52:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:52:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:52:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:52:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:52:21,761 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 08:52:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:21,761 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:52:21,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:52:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:52:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:52:21,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:21,762 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 08:52:21,762 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:21,762 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 08:52:21,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:22,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:22,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:52:22,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:52:22,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:52:22,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:52:22,181 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 08:52:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:22,329 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:52:22,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:52:22,329 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 08:52:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:22,330 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:52:22,330 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:52:22,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:52:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:52:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:52:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:52:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:52:22,336 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 08:52:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:22,337 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:52:22,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:52:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:52:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:52:22,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:22,338 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 08:52:22,338 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:22,339 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 08:52:22,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:22,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:22,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:52:22,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:52:22,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:52:22,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:52:22,832 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 08:52:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:23,100 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:52:23,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:52:23,100 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 08:52:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:23,101 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:52:23,102 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:52:23,102 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 08:52:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:52:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:52:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:52:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:52:23,107 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 08:52:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:23,107 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:52:23,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:52:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:52:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:52:23,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:23,109 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 08:52:23,109 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:23,109 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 08:52:23,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:23,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:23,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:52:23,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:52:23,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:52:23,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:52:23,592 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 08:52:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:23,822 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:52:23,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:52:23,823 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 08:52:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:23,824 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:52:23,824 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:52:23,825 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:52:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:52:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:52:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:52:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:52:23,830 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 08:52:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:23,830 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:52:23,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:52:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:52:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:52:23,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:23,832 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 08:52:23,832 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 08:52:23,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:24,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:52:24,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:52:24,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:52:24,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:52:24,330 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 08:52:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:24,450 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:52:24,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:52:24,451 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 08:52:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:24,451 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:52:24,451 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:52:24,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:52:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:52:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:52:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:52:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:52:24,456 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 08:52:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:24,457 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:52:24,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:52:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:52:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:52:24,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:24,458 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 08:52:24,458 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 08:52:24,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:24,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:52:24,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:52:24,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:52:24,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:52:24,966 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 08:52:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:25,216 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:52:25,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:52:25,217 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 08:52:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:25,217 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:52:25,217 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:52:25,218 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 08:52:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:52:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:52:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:52:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:52:25,223 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 08:52:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:25,223 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:52:25,223 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:52:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:52:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:52:25,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:25,225 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 08:52:25,225 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 08:52:25,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:25,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:25,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:52:25,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:52:25,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:52:25,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:52:25,750 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 08:52:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:25,992 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:52:25,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:52:25,992 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 08:52:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:25,993 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:52:25,993 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:52:25,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:52:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:52:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:52:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:52:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:52:26,001 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 08:52:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:26,002 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:52:26,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:52:26,002 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:52:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:52:26,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:26,003 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 08:52:26,004 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:26,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 08:52:26,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:26,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:26,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:52:26,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:52:26,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:52:26,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:52:26,537 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 08:52:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:26,695 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:52:26,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:52:26,695 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 08:52:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:26,696 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:52:26,696 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:52:26,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:52:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:52:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:52:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:52:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:52:26,701 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 08:52:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:26,701 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:52:26,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:52:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:52:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:52:26,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:26,703 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 08:52:26,703 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:26,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 08:52:26,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:27,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:27,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:52:27,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:52:27,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:52:27,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:52:27,170 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 08:52:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:27,329 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:52:27,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:52:27,329 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 08:52:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:27,329 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:52:27,329 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:52:27,330 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:52:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:52:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:52:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:52:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:52:27,335 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 08:52:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:27,335 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:52:27,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:52:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:52:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:52:27,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:27,337 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 08:52:27,337 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 08:52:27,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:27,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:27,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:52:27,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:52:27,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:52:27,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:52:27,837 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 08:52:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,025 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:52:28,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:52:28,026 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 08:52:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,026 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:52:28,026 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:52:28,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:52:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:52:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:52:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:52:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:52:28,031 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 08:52:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,031 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:52:28,031 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:52:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:52:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:52:28,032 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,032 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 08:52:28,032 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 08:52:28,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:28,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:28,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:52:28,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:52:28,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:52:28,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:52:28,555 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 08:52:28,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,751 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:52:28,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:52:28,752 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 08:52:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,752 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:52:28,752 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:52:28,753 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 08:52:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:52:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:52:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:52:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:52:28,758 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 08:52:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,759 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:52:28,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:52:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:52:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:52:28,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,760 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 08:52:28,760 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 08:52:28,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:29,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:29,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:52:29,364 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:52:29,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:52:29,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:52:29,366 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 08:52:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:29,578 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:52:29,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:52:29,578 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 08:52:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:29,579 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:52:29,579 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:52:29,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:52:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:52:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:52:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:52:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:52:29,585 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 08:52:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:29,585 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:52:29,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:52:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:52:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:52:29,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:29,586 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 08:52:29,587 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:29,587 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 08:52:29,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:30,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:30,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:52:30,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:52:30,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:52:30,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:52:30,083 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 08:52:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:30,313 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:52:30,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:52:30,313 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 08:52:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:30,314 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:52:30,314 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:52:30,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:52:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:52:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:52:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:52:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:52:30,318 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 08:52:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:30,318 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:52:30,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:52:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:52:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:52:30,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:30,319 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 08:52:30,319 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:30,320 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 08:52:30,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:30,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:30,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:52:30,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:52:30,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:52:30,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:52:30,897 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 08:52:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:31,154 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:52:31,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:52:31,154 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 08:52:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:31,155 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:52:31,155 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:52:31,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:52:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:52:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:52:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:52:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:52:31,160 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 08:52:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:31,160 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:52:31,160 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:52:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:52:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:52:31,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:31,161 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 08:52:31,162 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 08:52:31,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:31,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:31,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:52:31,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:52:31,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:52:31,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:52:31,708 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 08:52:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:31,844 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:52:31,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:52:31,845 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 08:52:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:31,845 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:52:31,845 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:52:31,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:52:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:52:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:52:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:52:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:52:31,850 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 08:52:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:31,850 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:52:31,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:52:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:52:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:52:31,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:31,852 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 08:52:31,852 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:31,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 08:52:31,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:32,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:32,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:52:32,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:52:32,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:52:32,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:52:32,565 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 08:52:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:32,784 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:52:32,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:52:32,785 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 08:52:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:32,785 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:52:32,785 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:52:32,786 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:52:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:52:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:52:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:52:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:52:32,791 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 08:52:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:32,791 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:52:32,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:52:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:52:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:52:32,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:32,792 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 08:52:32,793 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 08:52:32,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:33,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:33,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:52:33,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:52:33,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:52:33,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:52:33,347 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 08:52:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:33,670 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:52:33,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:52:33,670 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 08:52:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:33,671 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:52:33,671 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:52:33,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:52:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:52:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:52:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:52:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:52:33,677 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 08:52:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:33,677 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:52:33,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:52:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:52:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:52:33,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:33,679 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 08:52:33,679 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 08:52:33,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:34,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:34,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:52:34,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:52:34,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:52:34,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:52:34,478 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 08:52:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:34,738 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:52:34,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:52:34,738 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 08:52:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:34,738 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:52:34,738 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:52:34,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:52:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:52:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:52:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:52:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:52:34,743 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 08:52:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:34,743 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:52:34,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:52:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:52:34,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:52:34,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:34,745 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 08:52:34,745 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:34,745 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 08:52:34,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:35,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:35,276 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:52:35,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:52:35,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:52:35,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:52:35,280 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 08:52:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:35,407 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:52:35,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:52:35,407 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 08:52:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:35,408 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:52:35,408 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:52:35,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:52:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:52:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:52:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:52:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:52:35,413 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 08:52:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:35,414 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:52:35,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:52:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:52:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:52:35,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:35,415 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 08:52:35,415 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:35,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 08:52:35,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:36,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:36,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:52:36,007 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:52:36,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:52:36,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:52:36,009 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 08:52:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:36,325 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:52:36,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:52:36,325 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 08:52:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:36,326 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:52:36,326 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:52:36,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:52:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:52:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:52:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:52:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:52:36,332 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 08:52:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:36,332 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:52:36,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:52:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:52:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:52:36,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:36,333 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 08:52:36,334 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:36,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 08:52:36,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:36,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:36,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:52:36,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:52:36,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:52:36,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:52:36,910 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 08:52:37,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:37,182 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:52:37,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:52:37,183 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 08:52:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:37,183 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:52:37,183 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:52:37,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:52:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:52:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:52:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:52:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:52:37,189 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 08:52:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:37,189 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:52:37,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:52:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:52:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:52:37,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:37,191 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 08:52:37,191 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:37,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 08:52:37,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:37,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:37,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:52:37,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:52:37,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:52:37,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:52:37,857 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 08:52:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:38,017 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:52:38,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:52:38,017 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 08:52:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:38,018 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:52:38,018 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:52:38,019 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 08:52:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:52:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 08:52:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:52:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 08:52:38,024 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 08:52:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:38,025 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 08:52:38,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:52:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 08:52:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:52:38,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:38,026 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 08:52:38,026 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:38,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 08:52:38,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:38,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:38,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:52:38,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:52:38,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:52:38,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:52:38,677 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 08:52:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:38,999 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:52:38,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:52:39,000 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 08:52:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:39,000 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:52:39,000 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:52:39,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:52:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:52:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 08:52:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 08:52:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 08:52:39,006 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 08:52:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:39,006 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 08:52:39,006 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:52:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 08:52:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 08:52:39,007 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:39,007 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 08:52:39,008 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:39,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 08:52:39,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:39,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:39,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:52:39,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:52:39,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:52:39,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:52:39,703 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 08:52:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:39,852 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:52:39,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:52:39,852 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 08:52:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:39,853 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:52:39,853 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:52:39,854 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:52:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:52:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 08:52:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 08:52:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 08:52:39,860 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 08:52:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:39,860 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 08:52:39,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:52:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 08:52:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 08:52:39,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:39,862 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 08:52:39,862 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 08:52:39,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:40,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:40,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:52:40,637 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:52:40,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:52:40,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:52:40,640 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 08:52:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:40,976 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:52:40,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:52:40,976 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 08:52:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:40,976 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:52:40,977 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 08:52:40,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:52:40,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 08:52:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 08:52:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 08:52:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 08:52:40,983 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 08:52:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:40,983 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 08:52:40,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:52:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 08:52:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 08:52:40,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:40,984 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 08:52:40,985 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 08:52:40,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:41,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:41,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:52:41,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:52:41,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:52:41,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:52:41,636 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 08:52:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:41,783 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:52:41,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:52:41,783 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 08:52:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:41,784 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:52:41,784 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 08:52:41,786 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:52:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 08:52:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 08:52:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 08:52:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 08:52:41,790 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 08:52:41,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:41,791 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 08:52:41,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:52:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 08:52:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 08:52:41,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:41,792 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 08:52:41,793 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 08:52:41,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:42,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:42,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:52:42,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:52:42,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:52:42,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:52:42,462 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 08:52:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:42,777 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:52:42,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:52:42,777 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 08:52:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:42,778 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:52:42,778 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:52:42,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:52:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:52:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 08:52:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 08:52:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 08:52:42,783 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 08:52:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:42,783 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 08:52:42,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:52:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 08:52:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 08:52:42,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:42,785 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 08:52:42,785 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 08:52:42,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:43,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:43,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:52:43,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:52:43,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:52:43,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:52:43,452 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 08:52:43,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:43,770 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:52:43,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:52:43,770 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 08:52:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:43,771 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:52:43,771 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 08:52:43,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:52:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 08:52:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 08:52:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 08:52:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 08:52:43,776 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 08:52:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:43,776 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 08:52:43,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:52:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 08:52:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 08:52:43,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:43,777 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 08:52:43,777 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:43,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 08:52:43,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:44,479 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:44,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:52:44,480 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:52:44,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:52:44,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:52:44,482 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 08:52:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:44,786 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:52:44,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:52:44,786 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 08:52:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:44,787 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:52:44,787 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 08:52:44,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:52:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 08:52:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 08:52:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 08:52:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 08:52:44,793 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 08:52:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:44,793 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 08:52:44,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:52:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 08:52:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 08:52:44,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:44,795 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 08:52:44,795 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 08:52:44,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:45,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:45,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:52:45,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:52:45,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:52:45,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:52:45,500 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 08:52:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:45,859 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:52:45,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:52:45,859 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 08:52:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:45,860 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:52:45,860 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:52:45,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:52:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:52:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 08:52:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 08:52:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 08:52:45,864 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 08:52:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:45,865 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 08:52:45,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:52:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 08:52:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 08:52:45,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:45,866 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 08:52:45,866 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 08:52:45,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:46,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:46,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:52:46,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:52:46,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:52:46,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:52:46,509 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 08:52:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:46,916 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:52:46,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:52:46,917 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 08:52:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:46,917 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:52:46,917 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 08:52:46,919 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:52:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 08:52:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 08:52:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 08:52:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 08:52:46,922 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 08:52:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:46,923 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 08:52:46,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:52:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 08:52:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 08:52:46,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:46,924 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 08:52:46,924 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 08:52:46,924 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:47,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:47,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:52:47,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:52:47,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:52:47,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:52:47,627 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 08:52:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:47,804 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:52:47,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:52:47,804 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 08:52:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:47,805 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:52:47,805 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 08:52:47,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:52:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 08:52:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 08:52:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 08:52:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 08:52:47,812 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 08:52:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:47,812 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 08:52:47,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:52:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 08:52:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 08:52:47,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:47,814 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 08:52:47,814 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 08:52:47,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:48,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:48,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:52:48,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:52:48,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:52:48,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:52:48,532 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 08:52:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:48,925 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:52:48,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:52:48,926 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 08:52:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:48,927 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:52:48,927 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:52:48,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:52:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:52:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 08:52:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 08:52:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 08:52:48,934 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 08:52:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:48,934 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 08:52:48,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:52:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 08:52:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 08:52:48,935 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:48,935 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 08:52:48,936 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:48,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 08:52:48,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:49,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:49,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:52:49,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:52:49,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:52:49,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:52:49,715 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 08:52:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:50,130 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:52:50,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:52:50,130 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 08:52:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:50,131 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:52:50,131 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 08:52:50,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:52:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 08:52:50,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 08:52:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 08:52:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 08:52:50,135 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 08:52:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:50,136 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 08:52:50,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:52:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 08:52:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 08:52:50,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:50,137 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-07-25 08:52:50,137 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 08:52:50,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:50,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:50,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:52:50,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:52:50,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:52:50,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:52:50,874 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 08:52:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:51,355 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:52:51,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:52:51,355 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 08:52:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:51,356 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:52:51,356 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:52:51,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:52:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:52:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 08:52:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 08:52:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 08:52:51,363 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 08:52:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:51,363 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 08:52:51,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:52:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 08:52:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 08:52:51,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:51,365 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 08:52:51,365 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:51,365 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 08:52:51,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:52,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:52,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:52:52,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:52:52,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:52:52,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:52:52,236 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 08:52:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:52,806 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:52:52,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:52:52,807 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 08:52:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:52,807 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:52:52,807 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:52:52,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:52:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:52:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 08:52:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 08:52:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 08:52:52,811 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 08:52:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:52,812 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 08:52:52,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:52:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 08:52:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 08:52:52,812 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:52,812 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 08:52:52,813 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:52,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 08:52:52,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:53,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:53,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:52:53,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:52:53,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:52:53,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:52:53,552 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 08:52:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:54,105 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:52:54,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:52:54,105 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 08:52:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:54,106 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:52:54,106 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 08:52:54,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:52:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 08:52:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 08:52:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 08:52:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 08:52:54,111 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 08:52:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:54,111 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 08:52:54,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:52:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 08:52:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 08:52:54,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:54,112 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 08:52:54,112 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 08:52:54,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:54,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:54,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:52:54,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:52:54,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:52:54,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:52:54,899 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 08:52:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:55,549 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:52:55,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:52:55,550 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 08:52:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:55,550 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:52:55,550 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 08:52:55,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:52:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 08:52:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 08:52:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 08:52:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 08:52:55,556 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 08:52:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:55,556 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 08:52:55,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:52:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 08:52:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 08:52:55,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:55,557 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 08:52:55,557 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 08:52:55,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:56,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:56,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:52:56,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:52:56,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:52:56,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:52:56,406 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 08:52:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:57,040 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:52:57,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:52:57,041 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 08:52:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:57,042 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:52:57,042 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:52:57,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:52:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:52:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 08:52:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 08:52:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 08:52:57,047 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 08:52:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:57,048 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 08:52:57,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:52:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 08:52:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 08:52:57,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:57,049 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 08:52:57,049 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 08:52:57,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:57,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:57,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:52:57,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:52:57,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:52:57,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:52:57,811 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 08:52:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:58,449 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:52:58,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:52:58,449 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 08:52:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:58,449 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:52:58,449 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 08:52:58,450 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:52:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 08:52:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 08:52:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 08:52:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 08:52:58,454 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 08:52:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:58,454 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 08:52:58,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:52:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 08:52:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 08:52:58,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:58,455 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 08:52:58,455 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 08:52:58,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:59,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:59,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:52:59,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:52:59,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:52:59,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:52:59,310 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 08:52:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:59,893 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:52:59,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:52:59,893 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 08:52:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:59,894 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:52:59,894 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 08:52:59,895 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 08:52:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 08:52:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 08:52:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 08:52:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 08:52:59,901 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 08:52:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:59,901 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 08:52:59,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:52:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 08:52:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 08:52:59,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:59,903 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 08:52:59,903 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 08:52:59,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:00,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:00,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:53:00,759 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:53:00,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:53:00,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:53:00,762 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 08:53:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:01,331 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:53:01,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:53:01,331 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 08:53:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:01,332 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:53:01,332 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:53:01,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:53:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:53:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 08:53:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 08:53:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 08:53:01,337 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 08:53:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:01,337 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 08:53:01,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:53:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 08:53:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 08:53:01,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:01,338 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 08:53:01,338 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 08:53:01,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:02,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:02,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:53:02,225 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:53:02,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:53:02,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:53:02,228 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 08:53:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:02,884 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:53:02,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:53:02,885 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 08:53:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:02,885 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:53:02,885 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 08:53:02,887 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:53:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 08:53:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 08:53:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 08:53:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 08:53:02,891 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 08:53:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:02,891 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 08:53:02,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:53:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 08:53:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 08:53:02,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:02,892 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 08:53:02,892 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 08:53:02,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:03,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:03,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:53:03,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:53:03,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:53:03,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:53:03,784 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 08:53:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:04,241 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:53:04,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:53:04,242 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 08:53:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:04,242 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:53:04,242 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 08:53:04,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:53:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 08:53:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 08:53:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 08:53:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 08:53:04,248 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 08:53:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:04,248 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 08:53:04,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:53:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 08:53:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 08:53:04,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:04,249 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 08:53:04,249 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 08:53:04,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:05,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:05,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:53:05,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:53:05,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:53:05,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:53:05,241 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 08:53:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:05,527 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:53:05,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:53:05,527 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 08:53:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:05,528 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:53:05,528 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:53:05,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:53:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:53:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 08:53:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 08:53:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 08:53:05,536 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 08:53:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:05,536 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 08:53:05,537 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:53:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 08:53:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 08:53:05,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:05,538 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 08:53:05,538 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:05,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 08:53:05,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:06,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:06,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:53:06,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:53:06,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:53:06,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:53:06,480 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 08:53:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:07,406 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:53:07,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:53:07,406 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 08:53:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:07,407 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:53:07,407 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 08:53:07,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:53:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 08:53:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 08:53:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 08:53:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 08:53:07,412 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 08:53:07,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:07,412 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 08:53:07,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:53:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 08:53:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 08:53:07,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:07,413 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 08:53:07,413 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 08:53:07,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:08,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:08,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:53:08,276 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:53:08,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:53:08,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:53:08,279 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 08:53:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:09,038 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:53:09,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:53:09,038 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 08:53:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:09,039 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:53:09,039 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 08:53:09,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:53:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 08:53:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 08:53:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 08:53:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 08:53:09,045 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 08:53:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:09,046 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 08:53:09,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:53:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 08:53:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 08:53:09,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:09,047 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 08:53:09,047 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 08:53:09,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:10,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:10,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:53:10,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:53:10,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:53:10,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:53:10,069 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 08:53:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:10,464 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:53:10,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:53:10,465 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 08:53:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:10,465 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:53:10,465 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:53:10,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:53:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:53:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 08:53:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 08:53:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 08:53:10,471 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 08:53:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:10,472 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 08:53:10,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:53:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 08:53:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 08:53:10,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:10,473 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 08:53:10,473 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 08:53:10,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:11,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:11,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:53:11,486 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:53:11,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:53:11,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:53:11,489 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 08:53:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:12,216 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:53:12,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:53:12,216 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 08:53:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:12,217 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:53:12,217 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 08:53:12,218 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:53:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 08:53:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 08:53:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 08:53:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 08:53:12,222 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 08:53:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:12,222 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 08:53:12,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:53:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 08:53:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 08:53:12,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:12,223 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 08:53:12,223 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 08:53:12,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:13,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:13,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:53:13,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:53:13,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:53:13,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:53:13,190 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 08:53:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:14,019 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:53:14,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:53:14,020 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 08:53:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:14,021 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:53:14,021 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 08:53:14,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:53:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 08:53:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 08:53:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 08:53:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 08:53:14,029 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 08:53:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:14,029 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 08:53:14,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:53:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 08:53:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 08:53:14,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:14,031 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 08:53:14,031 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 08:53:14,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:15,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:15,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:53:15,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:53:15,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:53:15,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:53:15,170 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 08:53:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:15,498 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:53:15,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:53:15,498 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 08:53:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:15,499 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:53:15,499 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:53:15,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:53:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:53:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 08:53:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 08:53:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 08:53:15,504 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 08:53:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:15,504 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 08:53:15,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:53:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 08:53:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 08:53:15,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:15,506 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 08:53:15,506 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 08:53:15,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:16,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:16,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:53:16,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:53:16,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:53:16,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:53:16,526 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 08:53:17,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:17,368 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:53:17,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:53:17,368 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 08:53:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:17,369 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:53:17,369 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 08:53:17,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:53:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 08:53:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 08:53:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 08:53:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 08:53:17,377 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 08:53:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:17,378 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 08:53:17,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:53:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 08:53:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 08:53:17,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:17,379 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 08:53:17,379 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 08:53:17,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:18,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:18,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:53:18,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:53:18,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:53:18,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:53:18,465 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 08:53:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:18,709 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:53:18,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:53:18,709 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 08:53:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:18,710 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:53:18,710 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 08:53:18,711 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:53:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 08:53:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 08:53:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 08:53:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 08:53:18,715 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 08:53:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:18,715 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 08:53:18,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:53:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 08:53:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 08:53:18,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:18,717 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 08:53:18,717 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 08:53:18,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:19,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:19,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:53:19,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:53:19,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:53:19,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:53:19,725 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 08:53:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:20,417 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:53:20,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:53:20,418 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 08:53:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:20,418 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:53:20,418 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:53:20,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:53:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:53:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 08:53:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 08:53:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 08:53:20,425 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 08:53:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:20,425 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 08:53:20,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:53:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 08:53:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 08:53:20,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:20,427 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 08:53:20,427 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:20,427 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 08:53:20,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:21,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:21,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:53:21,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:53:21,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:53:21,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:53:21,550 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 08:53:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:21,940 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:53:21,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:53:21,941 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 08:53:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:21,941 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:53:21,941 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 08:53:21,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:53:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 08:53:21,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 08:53:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 08:53:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 08:53:21,946 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 08:53:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:21,947 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 08:53:21,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:53:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 08:53:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 08:53:21,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:21,948 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 08:53:21,948 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:21,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 08:53:21,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:22,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:22,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:53:22,916 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:53:22,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:53:22,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:53:22,919 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 08:53:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:23,721 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:53:23,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:53:23,721 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 08:53:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:23,722 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:53:23,722 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 08:53:23,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:53:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 08:53:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 08:53:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 08:53:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 08:53:23,727 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 08:53:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:23,728 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 08:53:23,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:53:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 08:53:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 08:53:23,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:23,729 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 08:53:23,729 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 08:53:23,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:24,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:24,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:53:24,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:53:24,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:53:24,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:53:24,792 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 08:53:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:25,648 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:53:25,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:53:25,648 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 08:53:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:25,649 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:53:25,649 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:53:25,649 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:53:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:53:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 08:53:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 08:53:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 08:53:25,653 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 08:53:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:25,654 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 08:53:25,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:53:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 08:53:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 08:53:25,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:25,655 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 08:53:25,655 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:25,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 08:53:25,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:26,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:26,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:53:26,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:53:26,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:53:26,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:53:26,653 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 08:53:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:26,943 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:53:26,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:53:26,944 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 08:53:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:26,944 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:53:26,944 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 08:53:26,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:53:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 08:53:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 08:53:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 08:53:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 08:53:26,949 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 08:53:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:26,950 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 08:53:26,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:53:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 08:53:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 08:53:26,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:26,951 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 08:53:26,951 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:26,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 08:53:26,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:28,050 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:28,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:53:28,051 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:53:28,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:53:28,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:53:28,054 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 08:53:29,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:29,092 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:53:29,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:53:29,093 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 08:53:29,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:29,093 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:53:29,093 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 08:53:29,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:53:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 08:53:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 08:53:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 08:53:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 08:53:29,099 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 08:53:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:29,099 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 08:53:29,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:53:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 08:53:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 08:53:29,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:29,100 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 08:53:29,100 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:29,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 08:53:29,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:30,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:30,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:53:30,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:53:30,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:53:30,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:53:30,183 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 08:53:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:31,151 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:53:31,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:53:31,152 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 08:53:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:31,152 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:53:31,152 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:53:31,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:53:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:53:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 08:53:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 08:53:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 08:53:31,158 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 08:53:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:31,158 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 08:53:31,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:53:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 08:53:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 08:53:31,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:31,159 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 08:53:31,159 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:31,159 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 08:53:31,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:32,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:32,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:53:32,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:53:32,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:53:32,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:53:32,240 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 08:53:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:32,992 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:53:32,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:53:32,992 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 08:53:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:32,992 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:53:32,992 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 08:53:32,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:53:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 08:53:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 08:53:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 08:53:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 08:53:32,998 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 08:53:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:32,998 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 08:53:32,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:53:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 08:53:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 08:53:32,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:32,999 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 08:53:32,999 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:33,000 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 08:53:33,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:34,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:34,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:53:34,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:53:34,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:53:34,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:53:34,144 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 08:53:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:34,465 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:53:34,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:53:34,465 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 08:53:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:34,466 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:53:34,466 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 08:53:34,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:53:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 08:53:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 08:53:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 08:53:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 08:53:34,473 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 08:53:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:34,473 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 08:53:34,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:53:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 08:53:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 08:53:34,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:34,475 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 08:53:34,475 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 08:53:34,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:35,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:35,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:53:35,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:53:35,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:53:35,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:53:35,811 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 08:53:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:36,255 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:53:36,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:53:36,255 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 08:53:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:36,256 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:53:36,256 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:53:36,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:53:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:53:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 08:53:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 08:53:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 08:53:36,262 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 08:53:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:36,262 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 08:53:36,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:53:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 08:53:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 08:53:36,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:36,263 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 08:53:36,263 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 08:53:36,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:37,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:37,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:53:37,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:53:37,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:53:37,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:53:37,385 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 08:53:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:38,152 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:53:38,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:53:38,152 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 08:53:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:38,153 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:53:38,153 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 08:53:38,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:53:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 08:53:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 08:53:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 08:53:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 08:53:38,158 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 08:53:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:38,159 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 08:53:38,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:53:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 08:53:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 08:53:38,160 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:38,160 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 08:53:38,160 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:38,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 08:53:38,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:39,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:39,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:53:39,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:53:39,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:53:39,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:53:39,314 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 08:53:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:40,308 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:53:40,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:53:40,308 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 08:53:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:40,309 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:53:40,309 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 08:53:40,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:53:40,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 08:53:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 08:53:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 08:53:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 08:53:40,315 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 08:53:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:40,315 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 08:53:40,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:53:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 08:53:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 08:53:40,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:40,316 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 08:53:40,316 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 08:53:40,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:41,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:41,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:53:41,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:53:41,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:53:41,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:53:41,453 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 08:53:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:42,467 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:53:42,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:53:42,467 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 08:53:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:42,468 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:53:42,468 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:53:42,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:53:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:53:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 08:53:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 08:53:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 08:53:42,474 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 08:53:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:42,474 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 08:53:42,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:53:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 08:53:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 08:53:42,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:42,475 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 08:53:42,475 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:42,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 08:53:42,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:43,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:43,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:53:43,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:53:43,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:53:43,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:53:43,671 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 08:53:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:44,664 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:53:44,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:53:44,664 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 08:53:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:44,665 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:53:44,665 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 08:53:44,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:53:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 08:53:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 08:53:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 08:53:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 08:53:44,670 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 08:53:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:44,670 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 08:53:44,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:53:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 08:53:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 08:53:44,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:44,672 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 08:53:44,672 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 08:53:44,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:45,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:45,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:53:45,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:53:45,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:53:45,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:53:45,824 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 08:53:46,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:46,978 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:53:46,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:53:46,978 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 08:53:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:46,979 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:53:46,979 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 08:53:46,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:53:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 08:53:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 08:53:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 08:53:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 08:53:46,984 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 08:53:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:46,985 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 08:53:46,985 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:53:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 08:53:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 08:53:46,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:46,986 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 08:53:46,986 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:46,986 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 08:53:46,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:48,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:48,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:53:48,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:53:48,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:53:48,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:53:48,301 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 08:53:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:49,338 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:53:49,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:53:49,338 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 08:53:49,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:49,339 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:53:49,339 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:53:49,340 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:53:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:53:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 08:53:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 08:53:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 08:53:49,344 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 08:53:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:49,345 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 08:53:49,345 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:53:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 08:53:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 08:53:49,347 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:49,347 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 08:53:49,347 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 08:53:49,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:50,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:50,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:53:50,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:53:50,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:53:50,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:53:50,631 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 08:53:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:51,586 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:53:51,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:53:51,586 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 08:53:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:51,586 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:53:51,586 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 08:53:51,588 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:53:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 08:53:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 08:53:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 08:53:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 08:53:51,595 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 08:53:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:51,596 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 08:53:51,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:53:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 08:53:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 08:53:51,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:51,598 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 08:53:51,598 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:51,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 08:53:51,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:53,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:53,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:53:53,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:53:53,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:53:53,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:53:53,107 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 08:53:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:53,581 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:53:53,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:53:53,581 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 08:53:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:53,582 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:53:53,582 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 08:53:53,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:53:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 08:53:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 08:53:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 08:53:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 08:53:53,587 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 08:53:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:53,588 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 08:53:53,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:53:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 08:53:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 08:53:53,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:53,589 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 08:53:53,589 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:53,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 08:53:53,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:54,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:54,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:53:54,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:53:54,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:53:54,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:53:54,991 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 08:53:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:55,574 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:53:55,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:53:55,574 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 08:53:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:55,575 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:53:55,575 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:53:55,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:53:55,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:53:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 08:53:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 08:53:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 08:53:55,582 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 08:53:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:55,582 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 08:53:55,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:53:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 08:53:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 08:53:55,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:55,584 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 08:53:55,584 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 08:53:55,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:57,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:57,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:53:57,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:53:57,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:53:57,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:53:57,013 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 08:53:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:58,193 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:53:58,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:53:58,193 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 08:53:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:58,194 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:53:58,194 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 08:53:58,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:53:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 08:53:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 08:53:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 08:53:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 08:53:58,201 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 08:53:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:58,201 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 08:53:58,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:53:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 08:53:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 08:53:58,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:58,202 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 08:53:58,202 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 08:53:58,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:59,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:59,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:53:59,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:53:59,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:53:59,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:53:59,556 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 08:54:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:01,179 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:54:01,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:54:01,179 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 08:54:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:01,179 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:54:01,179 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 08:54:01,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:54:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 08:54:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 08:54:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 08:54:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 08:54:01,186 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 08:54:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:01,187 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 08:54:01,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:54:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 08:54:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 08:54:01,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:01,188 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 08:54:01,188 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 08:54:01,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:54:02,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:54:02,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:54:02,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:54:02,532 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 08:54:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,401 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:54:03,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:54:03,401 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 08:54:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,402 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:54:03,402 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:54:03,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:54:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:54:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 08:54:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 08:54:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 08:54:03,408 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 08:54:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,408 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 08:54:03,408 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:54:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 08:54:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 08:54:03,409 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,409 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 08:54:03,409 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 08:54:03,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:54:04,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:54:04,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:54:04,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:54:04,836 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 08:54:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,363 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:54:05,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:54:05,363 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 08:54:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,364 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:54:05,364 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 08:54:05,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:54:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 08:54:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 08:54:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 08:54:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 08:54:05,371 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 08:54:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,371 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 08:54:05,371 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:54:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 08:54:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 08:54:05,372 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,373 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 08:54:05,373 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,373 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 08:54:05,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:54:06,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:54:06,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:54:06,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:54:06,820 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 08:54:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,685 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:54:08,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:54:08,685 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 08:54:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,686 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:54:08,686 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 08:54:08,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:54:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 08:54:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 08:54:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 08:54:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 08:54:08,692 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 08:54:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,693 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 08:54:08,693 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:54:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 08:54:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 08:54:08,694 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,694 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 08:54:08,694 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 08:54:08,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:10,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:10,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:54:10,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:54:10,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:54:10,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:54:10,162 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 08:54:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:11,189 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:54:11,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:54:11,189 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 08:54:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:11,190 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:54:11,190 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:54:11,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:54:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:54:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 08:54:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 08:54:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 08:54:11,197 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 08:54:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:11,197 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 08:54:11,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:54:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 08:54:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 08:54:11,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:11,198 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 08:54:11,198 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 08:54:11,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:12,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:12,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:54:12,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:54:12,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:54:12,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:54:12,683 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 08:54:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:13,760 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:54:13,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:54:13,760 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 08:54:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:13,761 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:54:13,761 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 08:54:13,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:54:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 08:54:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 08:54:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 08:54:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 08:54:13,767 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 08:54:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:13,767 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 08:54:13,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:54:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 08:54:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 08:54:13,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:13,768 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 08:54:13,769 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 08:54:13,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:15,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:15,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:54:15,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:54:15,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:54:15,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:54:15,269 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 08:54:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:16,879 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:54:16,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:54:16,879 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 08:54:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:16,880 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:54:16,880 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 08:54:16,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:54:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 08:54:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 08:54:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 08:54:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 08:54:16,886 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 08:54:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:16,886 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 08:54:16,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:54:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 08:54:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 08:54:16,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:16,887 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 08:54:16,887 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 08:54:16,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:18,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:18,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:54:18,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:54:18,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:54:18,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:54:18,358 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 08:54:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,146 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:54:19,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:54:19,147 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 08:54:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,147 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:54:19,147 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 08:54:19,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:54:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 08:54:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 08:54:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 08:54:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 08:54:19,154 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 08:54:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,155 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 08:54:19,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:54:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 08:54:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 08:54:19,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,156 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 08:54:19,156 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 08:54:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:20,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:54:20,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:54:20,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:54:20,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:54:20,714 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 08:54:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:22,458 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:54:22,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:54:22,459 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 08:54:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:22,459 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:54:22,459 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 08:54:22,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:54:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 08:54:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 08:54:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 08:54:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 08:54:22,465 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 08:54:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:22,465 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 08:54:22,466 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:54:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 08:54:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 08:54:22,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:22,467 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 08:54:22,467 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:22,467 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 08:54:22,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:24,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:54:24,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:54:24,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:54:24,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:54:24,070 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 08:54:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,951 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:54:24,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:54:24,951 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 08:54:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,952 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:54:24,952 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 08:54:24,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:54:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 08:54:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 08:54:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 08:54:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 08:54:24,957 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 08:54:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,957 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 08:54:24,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:54:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 08:54:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 08:54:24,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,959 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 08:54:24,959 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 08:54:24,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:26,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:54:26,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:54:26,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:54:26,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:54:26,527 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 08:54:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,792 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:54:27,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:54:27,793 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 08:54:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,793 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:54:27,793 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 08:54:27,795 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:54:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 08:54:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 08:54:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 08:54:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 08:54:27,801 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 08:54:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,801 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 08:54:27,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:54:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 08:54:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 08:54:27,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,802 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 08:54:27,803 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 08:54:27,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:29,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:54:29,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:54:29,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:54:29,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:54:29,536 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 08:54:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,520 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:54:31,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:54:31,520 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 08:54:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,521 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:54:31,521 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 08:54:31,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:54:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 08:54:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 08:54:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 08:54:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 08:54:31,526 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 08:54:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,527 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 08:54:31,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:54:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 08:54:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 08:54:31,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,528 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 08:54:31,528 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 08:54:31,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:54:33,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:54:33,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:54:33,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:54:33,109 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 08:54:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,681 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:54:33,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:54:33,681 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 08:54:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,681 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:54:33,681 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 08:54:33,683 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:54:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 08:54:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 08:54:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 08:54:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 08:54:33,688 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 08:54:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,689 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 08:54:33,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:54:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 08:54:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 08:54:33,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,691 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 08:54:33,691 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 08:54:33,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:54:35,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:54:35,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:54:35,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:54:35,162 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 08:54:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,324 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:54:36,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:54:36,324 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 08:54:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,325 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:54:36,325 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 08:54:36,326 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:54:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 08:54:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 08:54:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 08:54:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 08:54:36,331 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 08:54:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,331 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 08:54:36,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:54:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 08:54:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 08:54:36,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,333 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 08:54:36,333 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 08:54:36,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:54:37,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:54:37,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:54:37,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:54:37,805 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 08:54:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,468 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:54:39,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:54:39,468 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 08:54:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,468 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:54:39,468 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 08:54:39,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:54:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 08:54:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 08:54:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 08:54:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 08:54:39,474 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 08:54:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,474 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 08:54:39,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:54:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 08:54:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 08:54:39,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,475 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 08:54:39,476 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 08:54:39,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:54:41,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:54:41,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:54:41,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:54:41,122 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 08:54:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,304 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:54:42,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:54:42,304 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 08:54:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,305 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:54:42,305 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 08:54:42,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:54:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 08:54:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 08:54:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 08:54:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 08:54:42,311 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 08:54:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,312 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 08:54:42,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:54:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 08:54:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 08:54:42,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,314 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 08:54:42,314 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 08:54:42,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:54:43,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:54:43,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:54:43,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:54:43,943 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 08:54:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,572 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:54:44,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:54:44,572 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 08:54:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,573 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:54:44,573 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 08:54:44,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:54:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 08:54:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 08:54:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 08:54:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 08:54:44,579 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 08:54:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,580 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 08:54:44,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:54:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 08:54:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 08:54:44,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,582 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 08:54:44,582 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 08:54:44,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:54:46,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:54:46,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:54:46,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:54:46,314 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 08:54:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,160 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:54:47,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:54:47,161 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 08:54:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,161 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:54:47,161 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 08:54:47,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:54:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 08:54:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 08:54:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 08:54:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 08:54:47,169 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 08:54:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,169 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 08:54:47,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:54:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 08:54:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 08:54:47,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,171 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 08:54:47,171 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,171 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 08:54:47,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:54:48,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:54:48,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:54:48,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:54:48,905 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 08:54:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,671 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:54:50,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:54:50,672 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 08:54:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,672 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:54:50,672 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 08:54:50,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:54:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 08:54:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 08:54:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 08:54:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 08:54:50,680 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 08:54:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,680 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 08:54:50,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:54:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 08:54:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 08:54:50,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,682 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 08:54:50,682 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 08:54:50,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:54:52,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:54:52,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:54:52,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:54:52,639 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 08:54:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,128 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:54:55,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:54:55,128 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 08:54:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,128 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:54:55,129 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 08:54:55,131 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:54:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 08:54:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 08:54:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 08:54:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 08:54:55,137 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 08:54:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,137 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 08:54:55,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:54:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 08:54:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 08:54:55,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,139 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 08:54:55,139 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,139 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 08:54:55,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:54:57,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:54:57,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:54:57,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:54:57,179 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 08:54:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,858 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:54:59,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:54:59,859 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 08:54:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,859 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:54:59,860 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 08:54:59,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:54:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 08:54:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 08:54:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 08:54:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 08:54:59,868 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 08:54:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,868 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 08:54:59,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:54:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 08:54:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 08:54:59,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,870 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 08:54:59,870 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,870 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 08:54:59,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:55:01,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:55:01,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:55:01,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:55:01,951 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 08:55:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,434 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:55:04,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:55:04,434 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 08:55:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,435 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:55:04,435 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 08:55:04,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:55:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 08:55:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 08:55:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 08:55:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 08:55:04,441 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 08:55:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,442 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 08:55:04,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:55:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 08:55:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 08:55:04,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,443 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 08:55:04,444 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 08:55:04,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:55:06,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:55:06,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:55:06,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:55:06,456 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 08:55:09,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,285 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:55:09,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:55:09,286 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 08:55:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,286 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:55:09,286 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 08:55:09,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:55:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 08:55:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 08:55:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 08:55:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 08:55:09,295 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 08:55:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,295 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 08:55:09,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:55:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 08:55:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 08:55:09,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,297 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 08:55:09,297 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 08:55:09,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:55:11,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:55:11,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:55:11,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:55:11,328 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 08:55:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,036 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:55:14,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:55:14,037 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 08:55:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,037 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:55:14,037 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 08:55:14,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:55:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 08:55:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 08:55:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 08:55:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 08:55:14,045 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 08:55:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,046 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 08:55:14,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:55:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 08:55:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 08:55:14,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,047 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 08:55:14,048 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 08:55:14,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:16,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:55:16,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:55:16,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:55:16,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:55:16,194 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 08:55:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:18,505 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:55:18,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:55:18,505 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 08:55:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:18,506 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:55:18,506 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 08:55:18,507 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:55:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 08:55:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 08:55:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 08:55:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 08:55:18,512 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 08:55:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:18,513 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 08:55:18,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:55:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 08:55:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 08:55:18,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:18,514 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 08:55:18,514 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 08:55:18,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:20,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:20,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:55:20,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:55:20,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:55:20,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:55:20,606 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 08:55:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,644 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:55:22,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:55:22,644 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 08:55:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,644 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:55:22,645 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 08:55:22,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:55:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 08:55:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 08:55:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 08:55:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 08:55:22,653 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 08:55:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,653 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 08:55:22,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:55:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 08:55:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 08:55:22,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,655 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 08:55:22,655 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 08:55:22,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:24,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:24,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:55:24,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:55:24,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:55:24,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:55:24,686 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 08:55:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:25,529 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:55:25,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:55:25,529 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 08:55:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:25,530 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:55:25,530 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 08:55:25,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:55:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 08:55:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 08:55:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 08:55:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 08:55:25,539 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 08:55:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:25,540 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 08:55:25,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:55:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 08:55:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 08:55:25,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:25,542 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 08:55:25,542 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 08:55:25,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:27,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:27,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:55:27,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:55:27,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:55:27,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:55:27,529 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 08:55:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:28,507 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:55:28,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:55:28,507 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 08:55:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:28,508 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:55:28,508 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 08:55:28,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:55:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 08:55:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 08:55:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 08:55:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 08:55:28,514 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 08:55:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:28,514 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 08:55:28,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:55:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 08:55:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 08:55:28,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:28,515 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 08:55:28,516 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 08:55:28,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:30,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:30,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:55:30,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:55:30,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:55:30,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:55:30,586 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 08:55:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,586 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:55:32,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:55:32,587 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 08:55:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,587 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:55:32,587 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 08:55:32,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:55:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 08:55:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 08:55:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 08:55:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 08:55:32,595 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 08:55:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,595 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 08:55:32,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:55:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 08:55:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 08:55:32,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,597 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 08:55:32,597 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 08:55:32,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:34,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:34,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:55:34,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:55:34,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:55:34,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:55:34,621 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 08:55:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:37,546 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:55:37,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:55:37,546 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 08:55:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:37,546 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:55:37,546 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 08:55:37,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:55:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 08:55:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 08:55:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 08:55:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 08:55:37,554 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 08:55:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:37,554 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 08:55:37,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:55:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 08:55:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 08:55:37,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:37,555 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 08:55:37,556 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 08:55:37,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:39,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:39,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:55:39,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:55:39,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:55:39,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:55:39,576 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 08:55:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,304 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:55:41,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:55:41,304 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 08:55:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,305 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:55:41,305 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 08:55:41,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:55:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 08:55:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 08:55:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 08:55:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 08:55:41,311 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 08:55:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,311 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 08:55:41,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:55:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 08:55:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 08:55:41,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,312 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 08:55:41,312 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 08:55:41,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:43,379 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 08:55:43,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:43,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:55:43,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:55:43,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:55:43,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:55:43,386 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 08:55:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:44,670 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:55:44,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:55:44,670 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 08:55:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:44,671 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:55:44,671 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 08:55:44,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:55:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 08:55:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 08:55:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 08:55:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 08:55:44,678 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 08:55:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:44,678 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 08:55:44,678 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:55:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 08:55:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 08:55:44,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:44,680 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 08:55:44,680 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:44,680 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 08:55:44,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:46,725 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 08:55:46,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:46,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:55:46,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:55:46,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:55:46,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:55:46,730 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 08:55:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:49,408 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:55:49,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:55:49,408 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 08:55:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:49,409 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:55:49,409 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 08:55:49,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:55:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 08:55:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 08:55:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 08:55:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 08:55:49,415 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 08:55:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:49,415 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 08:55:49,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:55:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 08:55:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 08:55:49,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:49,417 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 08:55:49,417 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 08:55:49,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:51,462 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 08:55:51,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:51,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:55:51,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:55:51,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:55:51,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:55:51,467 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 08:55:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:52,893 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:55:52,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:55:52,894 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 08:55:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:52,894 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:55:52,894 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 08:55:52,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:55:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 08:55:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 08:55:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 08:55:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 08:55:52,901 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 08:55:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:52,901 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 08:55:52,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:55:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 08:55:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 08:55:52,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:52,903 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 08:55:52,903 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:52,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 08:55:52,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,080 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 08:55:55,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:55:55,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:55:55,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:55:55,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:55:55,087 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 08:55:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:57,423 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:55:57,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:55:57,424 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 08:55:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:57,425 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:55:57,425 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 08:55:57,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:55:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 08:55:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 08:55:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 08:55:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 08:55:57,432 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 08:55:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:57,432 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 08:55:57,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:55:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 08:55:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 08:55:57,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:57,434 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 08:55:57,434 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:57,434 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 08:55:57,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:59,421 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 08:55:59,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:59,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:55:59,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:55:59,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:55:59,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:55:59,427 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 08:56:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:00,853 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:56:00,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:56:00,853 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 08:56:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:00,854 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:56:00,854 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 08:56:00,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:56:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 08:56:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 08:56:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 08:56:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 08:56:00,862 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 08:56:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:00,862 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 08:56:00,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:56:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 08:56:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 08:56:00,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:00,864 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 08:56:00,864 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:00,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 08:56:00,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,080 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 08:56:03,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:56:03,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:56:03,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:56:03,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:56:03,083 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 08:56:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,127 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:56:05,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:56:05,128 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 08:56:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,128 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:56:05,129 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 08:56:05,129 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:56:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 08:56:05,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 08:56:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 08:56:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 08:56:05,134 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 08:56:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,135 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 08:56:05,135 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:56:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 08:56:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 08:56:05,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,136 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 08:56:05,136 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 08:56:05,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,319 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 08:56:07,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:56:07,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:56:07,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:56:07,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:56:07,326 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 08:56:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,218 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:56:09,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:56:09,218 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 08:56:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,219 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:56:09,219 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 08:56:09,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:56:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 08:56:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 08:56:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 08:56:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 08:56:09,226 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 08:56:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,226 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 08:56:09,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:56:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 08:56:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 08:56:09,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,228 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 08:56:09,228 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,228 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 08:56:09,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:56:10,812 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:56:10,818 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:56:10,818 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:56:10 BoogieIcfgContainer [2018-07-25 08:56:10,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:56:10,819 INFO L168 Benchmark]: Toolchain (without parser) took 262982.99 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 2.3 GB in the end (delta: -841.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-25 08:56:10,820 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:10,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.11 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 08:56:10,821 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 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 08:56:10,821 INFO L168 Benchmark]: RCFGBuilder took 203.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:10,821 INFO L168 Benchmark]: TraceAbstraction took 262700.56 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -851.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:56:10,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.11 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 26.44 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 203.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262700.56 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -851.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 16). Cancelled while BasicCegarLoop was analyzing trace of length 430 with TraceHistMax 214, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 190 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 262.6s OverallTime, 214 OverallIterations, 214 TraceHistogramMax, 104.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 427 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 57049 SolverSat, 419 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22791 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22791 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=430occurred in iteration=213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 213 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 15.9s SatisfiabilityAnalysisTime, 122.4s InterpolantComputationTime, 45795 NumberOfCodeBlocks, 45795 NumberOfCodeBlocksAsserted, 213 NumberOfCheckSat, 45582 ConstructedInterpolants, 0 QuantifiedInterpolants, 64878380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 213 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3221128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-56-10-833.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-56-10-833.csv Completed graceful shutdown