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/Luxembourg.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:54:01,397 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:54:01,399 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:54:01,416 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:54:01,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:54:01,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:54:01,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:54:01,425 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:54:01,427 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:54:01,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:54:01,429 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:54:01,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:54:01,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:54:01,446 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:54:01,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:54:01,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:54:01,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:54:01,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:54:01,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:54:01,451 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:54:01,454 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:54:01,469 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:54:01,469 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:54:01,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:54:01,470 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:54:01,471 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:54:01,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:54:01,471 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:54:01,471 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:54:01,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:54:01,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:54:01,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:54:01,547 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:54:01,548 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:54:01,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl [2018-07-25 08:54:01,550 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl' [2018-07-25 08:54:01,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:54:01,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:54:01,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:01,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:54:01,609 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:54:01,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,650 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:54:01,650 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:54:01,650 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:54:01,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:01,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:54:01,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:54:01,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:54:01,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:54:01,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:54:01,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:54:01,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:54:01,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/1) ... [2018-07-25 08:54:01,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:54:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:54:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:54:01,846 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:54:01,847 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:01 BoogieIcfgContainer [2018-07-25 08:54:01,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:54:01,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:54:01,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:54:01,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:54:01,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:01" (1/2) ... [2018-07-25 08:54:01,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411c0965 and model type Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:54:01, skipping insertion in model container [2018-07-25 08:54:01,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:01" (2/2) ... [2018-07-25 08:54:01,856 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg.bpl [2018-07-25 08:54:01,866 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:54:01,874 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:54:01,920 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:54:01,921 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:54:01,922 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:54:01,922 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:54:01,922 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:54:01,922 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:54:01,923 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:54:01,923 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:54:01,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:54:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:54:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:54:01,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:01,945 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:54:01,946 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:01,951 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-07-25 08:54:01,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,014 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 08:54:02,016 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:54:02,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:54:02,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:54:02,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:54:02,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:02,036 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:54:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,061 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-25 08:54:02,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:54:02,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:54:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,073 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:02,074 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 08:54:02,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 08:54:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 08:54:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 08:54:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 08:54:02,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 08:54:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,112 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 08:54:02,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:54:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 08:54:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:54:02,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,114 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:54:02,114 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,114 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-07-25 08:54:02,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:54:02,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:54:02,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:54:02,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:02,146 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-25 08:54:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,160 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:54:02,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:54:02,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:54:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,161 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:54:02,161 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:54:02,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:54:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:54:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:54:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:54:02,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-25 08:54:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,168 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:54:02,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:54:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:54:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:54:02,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,169 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:54:02,169 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,170 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-07-25 08:54:02,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:54:02,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:54:02,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:54:02,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:02,206 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-25 08:54:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,218 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:54:02,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:54:02,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:54:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,219 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:54:02,219 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:54:02,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:02,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:54:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:54:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:54:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:54:02,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:54:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,223 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:54:02,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:54:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:54:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:54:02,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,225 INFO L354 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-25 08:54:02,225 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,225 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-07-25 08:54:02,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,268 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 08:54:02,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:54:02,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:54:02,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:54:02,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:02,271 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:54:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,286 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:54:02,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:54:02,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:54:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,288 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:54:02,288 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:54:02,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:54:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:54:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:54:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:54:02,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-25 08:54:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,300 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:54:02,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:54:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:54:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:54:02,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,301 INFO L354 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-25 08:54:02,302 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-07-25 08:54:02,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:54:02,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:54:02,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:54:02,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:02,380 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:54:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,403 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:54:02,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:54:02,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:54:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,404 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:54:02,405 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:54:02,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:54:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:54:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:54:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:54:02,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-25 08:54:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,409 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:54:02,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:54:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:54:02,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:54:02,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,410 INFO L354 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-25 08:54:02,410 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-07-25 08:54:02,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:54:02,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:54:02,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:54:02,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:02,474 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-25 08:54:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,487 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:54:02,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:54:02,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-25 08:54:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,488 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:54:02,489 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:54:02,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:54:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:54:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:54:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:54:02,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-25 08:54:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,493 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:54:02,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:54:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:54:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:54:02,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,494 INFO L354 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-25 08:54:02,494 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-07-25 08:54:02,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:54:02,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:54:02,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:54:02,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:02,537 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-25 08:54:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,553 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:54:02,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:54:02,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-25 08:54:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,554 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:02,554 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:54:02,555 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:54:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:54:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:54:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:54:02,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-25 08:54:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,559 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:54:02,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:54:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:54:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:54:02,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,560 INFO L354 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-25 08:54:02,561 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-07-25 08:54:02,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:54:02,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:54:02,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:54:02,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:02,605 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-25 08:54:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,623 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:54:02,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:54:02,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-25 08:54:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,624 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:54:02,625 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:54:02,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:54:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:54:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:54:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:54:02,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-25 08:54:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,630 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:54:02,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:54:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:54:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:54:02,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,631 INFO L354 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-25 08:54:02,631 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-07-25 08:54:02,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:54:02,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:54:02,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:54:02,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:02,731 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-25 08:54:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,755 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:54:02,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:54:02,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-25 08:54:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,756 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:54:02,756 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:54:02,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:54:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:54:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:54:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:54:02,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-25 08:54:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,765 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:54:02,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:54:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:54:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:54:02,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,767 INFO L354 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-25 08:54:02,767 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,768 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-07-25 08:54:02,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:54:02,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:54:02,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:54:02,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:02,825 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-25 08:54:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,850 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:54:02,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:54:02,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-25 08:54:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,853 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:54:02,853 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:54:02,854 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:54:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:54:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:54:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:54:02,859 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-25 08:54:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,863 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:54:02,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:54:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:54:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:54:02,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,864 INFO L354 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-25 08:54:02,865 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-07-25 08:54:02,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:54:02,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:54:02,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:54:02,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:02,944 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 08:54:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,967 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:54:02,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:54:02,970 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 08:54:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,971 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:54:02,971 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:54:02,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:54:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:54:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:54:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:54:02,980 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-25 08:54:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,981 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:54:02,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:54:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:54:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:54:02,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,982 INFO L354 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-25 08:54:02,984 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-07-25 08:54:02,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:54:03,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:54:03,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:54:03,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:03,032 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-25 08:54:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,054 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:54:03,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:54:03,054 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-25 08:54:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,056 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:54:03,056 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:54:03,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:54:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:54:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:54:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:54:03,062 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-25 08:54:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,064 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:54:03,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:54:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:54:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:54:03,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,065 INFO L354 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-25 08:54:03,065 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-07-25 08:54:03,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:54:03,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:54:03,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:54:03,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:03,128 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-25 08:54:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,142 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:54:03,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:54:03,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-25 08:54:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,143 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:54:03,143 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:54:03,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:54:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:54:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:54:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:54:03,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-25 08:54:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,149 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:54:03,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:54:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:54:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:54:03,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,150 INFO L354 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-25 08:54:03,150 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-07-25 08:54:03,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:54:03,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:54:03,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:54:03,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:03,234 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-25 08:54:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,247 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:54:03,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:54:03,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-25 08:54:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,248 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:54:03,248 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:54:03,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:54:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:54:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:54:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:54:03,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-25 08:54:03,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,254 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:54:03,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:54:03,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:54:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:54:03,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,255 INFO L354 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-25 08:54:03,255 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,255 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-07-25 08:54:03,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:54:03,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:54:03,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:54:03,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:03,309 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 08:54:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,321 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:54:03,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:54:03,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 08:54:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,323 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:54:03,323 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:54:03,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:54:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:54:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:54:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:54:03,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-25 08:54:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,329 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:54:03,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:54:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:54:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:54:03,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,330 INFO L354 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-25 08:54:03,330 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-07-25 08:54:03,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:54:03,389 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:54:03,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:54:03,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:03,390 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-25 08:54:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,403 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:54:03,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:54:03,403 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-25 08:54:03,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,404 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:54:03,404 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:54:03,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:54:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:54:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:54:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:54:03,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-25 08:54:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,410 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:54:03,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:54:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:54:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:54:03,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,411 INFO L354 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-25 08:54:03,411 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-07-25 08:54:03,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:54:03,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:54:03,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:54:03,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:03,479 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-25 08:54:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,500 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:54:03,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:54:03,501 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-25 08:54:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,502 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:54:03,502 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:54:03,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:54:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:54:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:54:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:54:03,508 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-25 08:54:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,509 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:54:03,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:54:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:54:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:54:03,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,511 INFO L354 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-25 08:54:03,512 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-07-25 08:54:03,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:54:03,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:54:03,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:54:03,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:03,595 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-25 08:54:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,610 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:54:03,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:54:03,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-25 08:54:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,612 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:54:03,612 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:54:03,612 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:54:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:54:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:54:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:54:03,616 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-25 08:54:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,617 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:54:03,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:54:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:54:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:54:03,618 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,618 INFO L354 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-25 08:54:03,618 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-07-25 08:54:03,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:54:03,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:54:03,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:54:03,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:03,713 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-25 08:54:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,732 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:54:03,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:54:03,732 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-25 08:54:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,734 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:54:03,735 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:54:03,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:54:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:54:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:54:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:54:03,746 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-25 08:54:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,748 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:54:03,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:54:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:54:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:54:03,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,750 INFO L354 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-25 08:54:03,750 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-07-25 08:54:03,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:54:03,841 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:54:03,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:54:03,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:03,842 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-25 08:54:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,857 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:54:03,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:54:03,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-25 08:54:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,858 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:54:03,858 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:54:03,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:54:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:54:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:54:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:54:03,865 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-25 08:54:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,865 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:54:03,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:54:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:54:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:54:03,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,868 INFO L354 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-25 08:54:03,868 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-07-25 08:54:03,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,960 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 08:54:03,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:54:03,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:54:03,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:54:03,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:03,964 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-25 08:54:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:03,984 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:54:03,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:54:03,985 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-25 08:54:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:03,986 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:54:03,986 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:54:03,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:54:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:54:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:54:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:54:03,992 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-25 08:54:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,992 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:54:03,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:54:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:54:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:54:03,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,996 INFO L354 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-25 08:54:03,996 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-07-25 08:54:03,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:54:04,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:54:04,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:54:04,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:04,085 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-25 08:54:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,109 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:54:04,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:54:04,110 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-25 08:54:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,113 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:54:04,113 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:54:04,114 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:54:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:54:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:54:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:54:04,121 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-25 08:54:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,121 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:54:04,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:54:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:54:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:54:04,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,122 INFO L354 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-25 08:54:04,123 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-07-25 08:54:04,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:54:04,247 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:54:04,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:54:04,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:04,248 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-25 08:54:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,271 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:54:04,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:54:04,272 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-25 08:54:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,272 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:54:04,273 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:54:04,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:54:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:54:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:54:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:54:04,280 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-25 08:54:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,280 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:54:04,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:54:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:54:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:54:04,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,283 INFO L354 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-25 08:54:04,284 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-07-25 08:54:04,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:54:04,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:54:04,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:54:04,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:04,395 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-25 08:54:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,413 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:54:04,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:54:04,413 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-25 08:54:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,414 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:54:04,414 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:54:04,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:54:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:54:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:54:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:54:04,423 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-25 08:54:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,423 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:54:04,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:54:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:54:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:54:04,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,426 INFO L354 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-25 08:54:04,426 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-07-25 08:54:04,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:54:04,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:54:04,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:54:04,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:04,529 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-25 08:54:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,550 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:54:04,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:54:04,551 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-25 08:54:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,552 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:54:04,552 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:54:04,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:54:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:54:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:54:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:54:04,560 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-25 08:54:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,560 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:54:04,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:54:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:54:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:54:04,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,561 INFO L354 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-25 08:54:04,561 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-07-25 08:54:04,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:54:04,695 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:54:04,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:54:04,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:04,697 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-25 08:54:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,723 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:54:04,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:54:04,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-25 08:54:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,728 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:54:04,728 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:54:04,729 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:54:04,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:54:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:54:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:54:04,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-25 08:54:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,733 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:54:04,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:54:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:54:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:54:04,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,734 INFO L354 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-25 08:54:04,734 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-07-25 08:54:04,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:54:04,847 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:54:04,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:54:04,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:04,848 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-25 08:54:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,865 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:54:04,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:54:04,866 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-25 08:54:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,866 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:54:04,867 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:54:04,867 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:54:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:54:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:54:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:54:04,871 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-25 08:54:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,871 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:54:04,872 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:54:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:54:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:54:04,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,872 INFO L354 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-25 08:54:04,873 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-07-25 08:54:04,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:54:05,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:54:05,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:54:05,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:05,004 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-25 08:54:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,031 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:54:05,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:54:05,031 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-25 08:54:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,032 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:54:05,032 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:54:05,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:54:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:54:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:54:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:54:05,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-25 08:54:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,045 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:54:05,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:54:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:54:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:54:05,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,046 INFO L354 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-25 08:54:05,046 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-07-25 08:54:05,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:54:05,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:54:05,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:54:05,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:05,171 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-25 08:54:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,194 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:54:05,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:54:05,194 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-25 08:54:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,201 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:54:05,202 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:54:05,203 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:54:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:54:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:54:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:54:05,208 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-25 08:54:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,209 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:54:05,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:54:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:54:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:54:05,209 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,210 INFO L354 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-25 08:54:05,210 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,210 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-07-25 08:54:05,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:54:05,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:54:05,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:54:05,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:05,339 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-25 08:54:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,365 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:54:05,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:54:05,366 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-25 08:54:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,366 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:54:05,367 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:54:05,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:54:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:54:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:54:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:54:05,371 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [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 34 states and 34 transitions. [2018-07-25 08:54:05,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:54:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:54:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [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 [30, 1, 1, 1] [2018-07-25 08:54:05,373 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,373 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-07-25 08:54:05,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:54:05,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:54:05,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:54:05,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:05,517 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-25 08:54:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,534 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:54:05,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:54:05,535 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-25 08:54:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,535 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:54:05,535 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:54:05,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 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 08:54:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:54:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:54:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:54:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:54:05,540 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-25 08:54:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,541 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:54:05,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:54:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:54:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:54:05,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,541 INFO L354 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-25 08:54:05,542 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,542 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-07-25 08:54:05,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:54:05,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:54:05,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:54:05,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:05,692 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-25 08:54:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,709 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:54:05,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:54:05,709 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-25 08:54:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,710 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:54:05,710 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:54:05,711 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:54:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:54:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:54:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:54:05,718 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-25 08:54:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,718 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:54:05,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:54:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:54:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:54:05,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,724 INFO L354 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-25 08:54:05,724 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-07-25 08:54:05,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:05,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:54:05,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:54:05,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:54:05,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:05,914 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-25 08:54:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:05,929 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:54:05,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:54:05,929 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-25 08:54:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:05,930 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:54:05,930 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:54:05,931 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:54:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:54:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:54:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:54:05,934 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-25 08:54:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:05,935 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:54:05,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:54:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:54:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:54:05,935 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:05,936 INFO L354 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-25 08:54:05,936 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-07-25 08:54:05,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:54:06,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:54:06,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:54:06,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:06,075 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-25 08:54:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,091 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:54:06,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:54:06,091 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-25 08:54:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,091 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:54:06,092 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:54:06,093 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:54:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:54:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:54:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:54:06,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-25 08:54:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,096 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:54:06,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:54:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:54:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:54:06,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,096 INFO L354 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-25 08:54:06,097 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-07-25 08:54:06,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:54:06,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:54:06,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:54:06,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:06,235 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-25 08:54:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,251 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:54:06,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:54:06,251 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-25 08:54:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,252 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:54:06,252 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:54:06,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:54:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:54:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:54:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:54:06,256 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-25 08:54:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,256 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:54:06,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:54:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:54:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:54:06,256 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,257 INFO L354 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-25 08:54:06,257 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,257 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-07-25 08:54:06,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:54:06,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:54:06,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:54:06,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:06,414 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-25 08:54:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,430 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:54:06,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:54:06,430 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-25 08:54:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,430 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:54:06,431 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:54:06,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:54:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:54:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:54:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:54:06,434 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-25 08:54:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,434 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:54:06,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:54:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:54:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:54:06,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,435 INFO L354 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-25 08:54:06,436 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-07-25 08:54:06,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:54:06,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:54:06,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:54:06,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:06,588 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-25 08:54:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,606 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:54:06,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:54:06,606 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-25 08:54:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,607 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:54:06,607 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:54:06,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:54:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:54:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:54:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:54:06,611 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-25 08:54:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,611 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:54:06,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:54:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:54:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:54:06,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,612 INFO L354 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-25 08:54:06,612 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-07-25 08:54:06,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:54:06,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:54:06,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:54:06,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:06,772 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-25 08:54:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,796 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:54:06,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:54:06,796 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-25 08:54:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,796 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:54:06,797 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:54:06,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:54:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:54:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:54:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:54:06,801 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-25 08:54:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,802 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:54:06,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:54:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:54:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:54:06,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,803 INFO L354 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-25 08:54:06,803 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-07-25 08:54:06,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:54:06,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:54:06,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:54:06,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:06,981 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-25 08:54:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,003 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:54:07,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:54:07,003 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-25 08:54:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,004 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:54:07,004 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:54:07,005 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:54:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:54:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:54:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:54:07,007 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-25 08:54:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,008 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:54:07,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:54:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:54:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:54:07,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,009 INFO L354 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-25 08:54:07,009 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-07-25 08:54:07,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:07,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:54:07,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:54:07,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:54:07,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:07,188 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-25 08:54:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,208 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:54:07,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:54:07,208 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-25 08:54:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,209 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:54:07,209 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:54:07,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:54:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:54:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:54:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:54:07,213 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-25 08:54:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,213 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:54:07,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:54:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:54:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:54:07,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,214 INFO L354 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-25 08:54:07,214 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-07-25 08:54:07,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:07,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:54:07,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:54:07,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:54:07,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:07,397 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-25 08:54:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,422 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:54:07,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:54:07,422 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-25 08:54:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,422 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:54:07,423 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:54:07,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:54:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:54:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:54:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:54:07,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-25 08:54:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,426 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:54:07,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:54:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:54:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:54:07,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,427 INFO L354 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-25 08:54:07,427 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,427 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-07-25 08:54:07,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:07,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:54:07,605 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:54:07,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:54:07,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:07,606 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-25 08:54:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,626 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:54:07,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:54:07,626 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-25 08:54:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,627 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:54:07,627 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:54:07,628 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:54:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:54:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:54:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:54:07,631 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-25 08:54:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,631 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:54:07,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:54:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:54:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:54:07,632 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,632 INFO L354 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-25 08:54:07,632 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-07-25 08:54:07,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:07,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:54:07,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:54:07,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:54:07,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:07,808 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-25 08:54:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,828 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:54:07,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:54:07,828 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-25 08:54:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,829 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:54:07,829 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:54:07,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:54:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:54:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:54:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:54:07,833 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-25 08:54:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,834 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:54:07,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:54:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:54:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:54:07,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,838 INFO L354 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-25 08:54:07,838 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-07-25 08:54:07,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:54:08,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:54:08,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:54:08,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:08,024 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-25 08:54:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,054 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:54:08,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:54:08,054 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-25 08:54:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,055 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:54:08,055 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:54:08,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:54:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:54:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:54:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:54:08,060 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-25 08:54:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,061 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:54:08,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:54:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:54:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:54:08,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,062 INFO L354 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-25 08:54:08,062 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,062 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-07-25 08:54:08,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,279 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,279 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:54:08,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:54:08,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:54:08,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:08,281 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-25 08:54:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,306 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:54:08,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:54:08,306 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-25 08:54:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,307 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:54:08,307 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:54:08,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:54:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:54:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:54:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:54:08,311 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-25 08:54:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,311 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:54:08,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:54:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:54:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:54:08,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,312 INFO L354 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-25 08:54:08,312 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-07-25 08:54:08,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:54:08,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:54:08,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:54:08,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:08,554 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-25 08:54:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,577 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:54:08,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:54:08,577 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-25 08:54:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,577 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:54:08,578 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:54:08,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:54:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:54:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:54:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:54:08,581 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-25 08:54:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,581 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:54:08,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:54:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:54:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:54:08,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,582 INFO L354 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-25 08:54:08,582 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-07-25 08:54:08,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:54:08,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:54:08,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:54:08,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:08,764 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-25 08:54:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,785 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:54:08,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:54:08,786 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-25 08:54:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,786 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:54:08,787 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:54:08,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:54:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:54:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:54:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:54:08,790 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-25 08:54:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,790 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:54:08,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:54:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:54:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:54:08,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,791 INFO L354 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-25 08:54:08,791 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-07-25 08:54:08,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:54:08,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:54:08,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:54:08,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:08,969 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-25 08:54:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,991 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:54:08,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:54:08,991 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-25 08:54:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,992 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:54:08,992 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:54:08,993 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:54:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:54:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:54:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:54:08,995 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-25 08:54:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,996 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:54:08,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:54:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:54:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:54:08,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,997 INFO L354 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-25 08:54:08,997 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-07-25 08:54:08,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:09,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:09,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:54:09,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:54:09,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:54:09,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:09,179 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-25 08:54:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:09,204 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:54:09,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:54:09,204 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-25 08:54:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:09,205 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:54:09,205 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:54:09,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:54:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:54:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:54:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:54:09,209 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-25 08:54:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:09,210 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:54:09,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:54:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:54:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:54:09,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:09,210 INFO L354 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-25 08:54:09,211 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:09,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-07-25 08:54:09,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:09,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:09,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:54:09,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:54:09,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:54:09,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:09,396 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-25 08:54:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:09,424 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:54:09,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:54:09,424 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-25 08:54:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:09,425 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:54:09,425 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:54:09,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:54:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:54:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:54:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:54:09,428 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-25 08:54:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:09,429 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:54:09,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:54:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:54:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:54:09,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:09,429 INFO L354 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-25 08:54:09,430 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-07-25 08:54:09,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:09,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:09,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:54:09,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:54:09,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:54:09,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:09,610 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-25 08:54:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:09,638 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:54:09,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:54:09,638 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-25 08:54:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:09,639 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:54:09,639 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:54:09,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:54:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:54:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:54:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:54:09,642 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-25 08:54:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:09,643 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:54:09,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:54:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:54:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:54:09,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:09,644 INFO L354 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-25 08:54:09,644 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-07-25 08:54:09,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:09,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:09,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:54:09,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:54:09,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:54:09,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:09,830 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-25 08:54:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:09,853 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:54:09,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:54:09,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-25 08:54:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:09,854 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:54:09,854 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:54:09,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:54:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:54:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:54:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:54:09,858 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-25 08:54:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:09,858 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:54:09,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:54:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:54:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:54:09,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:09,859 INFO L354 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-25 08:54:09,859 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:09,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-07-25 08:54:09,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:10,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:10,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:54:10,066 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:54:10,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:54:10,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:10,068 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-25 08:54:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:10,100 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:54:10,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:54:10,100 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-25 08:54:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:10,101 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:54:10,101 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:54:10,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:54:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:54:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:54:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:54:10,104 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-25 08:54:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:10,105 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:54:10,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:54:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:54:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:54:10,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:10,106 INFO L354 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-25 08:54:10,106 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-07-25 08:54:10,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:10,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:10,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:54:10,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:54:10,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:54:10,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:10,329 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-25 08:54:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:10,361 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:54:10,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:54:10,361 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-25 08:54:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:10,362 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:54:10,362 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:54:10,364 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:54:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:54:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:54:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:54:10,366 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-25 08:54:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:10,367 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:54:10,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:54:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:54:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:54:10,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:10,368 INFO L354 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-25 08:54:10,368 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:10,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-07-25 08:54:10,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:10,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:10,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:54:10,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:54:10,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:54:10,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:10,585 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-25 08:54:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:10,623 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:54:10,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:54:10,623 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-25 08:54:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:10,624 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:54:10,624 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:54:10,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:54:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:54:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:54:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:54:10,628 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-25 08:54:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:10,630 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:54:10,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:54:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:54:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:54:10,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:10,631 INFO L354 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-25 08:54:10,631 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-07-25 08:54:10,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:10,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:10,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:54:10,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:54:10,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:54:10,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:10,906 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-25 08:54:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:10,937 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:54:10,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:54:10,938 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-25 08:54:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:10,938 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:54:10,939 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:54:10,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:54:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:54:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:54:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:54:10,945 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-25 08:54:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:10,945 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:54:10,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:54:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:54:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:54:10,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:10,947 INFO L354 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-25 08:54:10,947 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-07-25 08:54:10,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:11,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:11,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:54:11,287 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:54:11,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:54:11,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:11,289 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-25 08:54:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:11,332 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:54:11,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:54:11,332 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-25 08:54:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:11,333 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:54:11,333 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:54:11,334 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:54:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:54:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:54:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:54:11,337 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-25 08:54:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:11,338 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:54:11,338 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:54:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:54:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:54:11,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:11,339 INFO L354 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-25 08:54:11,339 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:11,339 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-07-25 08:54:11,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:11,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:11,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:54:11,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:54:11,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:54:11,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:54:11,634 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-25 08:54:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:11,673 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:54:11,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:54:11,673 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-25 08:54:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:11,674 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:54:11,674 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:54:11,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 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 08:54:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:54:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:54:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:54:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:54:11,679 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-25 08:54:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:11,680 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:54:11,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:54:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:54:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:54:11,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:11,681 INFO L354 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-25 08:54:11,681 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-07-25 08:54:11,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:11,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:11,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:54:11,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:54:11,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:54:11,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:11,913 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-25 08:54:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:11,955 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:54:11,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:54:11,955 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-25 08:54:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:11,956 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:54:11,956 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:54:11,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:54:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:54:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:54:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:54:11,960 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-25 08:54:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:11,961 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:54:11,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:54:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:54:11,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:54:11,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:11,962 INFO L354 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-25 08:54:11,962 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:11,962 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-07-25 08:54:11,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:12,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:12,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:54:12,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:54:12,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:54:12,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:12,208 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-25 08:54:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:12,250 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:54:12,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:54:12,251 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-25 08:54:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:12,251 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:54:12,252 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:54:12,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:54:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:54:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:54:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:54:12,257 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-25 08:54:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:12,257 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:54:12,257 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:54:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:54:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:54:12,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:12,258 INFO L354 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-25 08:54:12,258 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:12,258 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-07-25 08:54:12,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:12,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:12,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:54:12,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:54:12,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:54:12,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:12,503 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-25 08:54:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:12,543 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:54:12,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:54:12,543 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-25 08:54:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:12,544 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:54:12,544 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:54:12,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:54:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:54:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:54:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:54:12,550 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-25 08:54:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:12,550 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:54:12,551 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:54:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:54:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:54:12,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:12,551 INFO L354 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-25 08:54:12,552 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:12,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-07-25 08:54:12,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:12,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:12,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:54:12,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:54:12,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:54:12,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:12,795 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-25 08:54:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:12,830 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:54:12,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:54:12,830 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-25 08:54:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:12,831 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:54:12,831 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:54:12,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:54:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:54:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:54:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:54:12,835 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-25 08:54:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:12,835 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:54:12,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:54:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:54:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:54:12,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:12,836 INFO L354 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-25 08:54:12,836 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-07-25 08:54:12,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:13,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:13,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:54:13,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:54:13,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:54:13,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:13,075 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-25 08:54:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:13,119 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:54:13,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:54:13,119 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-25 08:54:13,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:13,120 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:54:13,120 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:54:13,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:54:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:54:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:54:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:54:13,123 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-25 08:54:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:13,124 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:54:13,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:54:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:54:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:54:13,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:13,124 INFO L354 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-25 08:54:13,125 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-07-25 08:54:13,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:13,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:13,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:54:13,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:54:13,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:54:13,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:13,369 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-25 08:54:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:13,404 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:54:13,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:54:13,404 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-25 08:54:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:13,405 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:54:13,405 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:54:13,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:54:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:54:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:54:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:54:13,410 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-25 08:54:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:13,410 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:54:13,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:54:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:54:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:54:13,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:13,411 INFO L354 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-25 08:54:13,412 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:13,412 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-07-25 08:54:13,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:13,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:13,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:54:13,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:54:13,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:54:13,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:13,704 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-25 08:54:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:13,756 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:54:13,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:54:13,756 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-25 08:54:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:13,757 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:54:13,757 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:54:13,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:54:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:54:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:54:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:54:13,761 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-25 08:54:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:13,762 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:54:13,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:54:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:54:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:54:13,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:13,763 INFO L354 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-25 08:54:13,763 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-07-25 08:54:13,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:14,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:14,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:54:14,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:54:14,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:54:14,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:14,083 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-25 08:54:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:14,130 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:54:14,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:54:14,130 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-25 08:54:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:14,131 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:54:14,131 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:54:14,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:54:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:54:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:54:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:54:14,135 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-25 08:54:14,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:14,135 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:54:14,135 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:54:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:54:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:54:14,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:14,136 INFO L354 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-25 08:54:14,136 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-07-25 08:54:14,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:14,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:14,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:54:14,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:54:14,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:54:14,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:14,370 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-25 08:54:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:14,416 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:54:14,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:54:14,416 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-25 08:54:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:14,417 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:54:14,417 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:54:14,418 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:54:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:54:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:54:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:54:14,421 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-25 08:54:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:14,421 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:54:14,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:54:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:54:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:54:14,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:14,422 INFO L354 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-25 08:54:14,423 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-07-25 08:54:14,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:14,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:14,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:54:14,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:54:14,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:54:14,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:14,659 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-25 08:54:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:14,693 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:54:14,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:54:14,693 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-25 08:54:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:14,694 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:54:14,694 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:54:14,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:54:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:54:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:54:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:54:14,698 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-25 08:54:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:14,698 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:54:14,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:54:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:54:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:54:14,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:14,699 INFO L354 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-25 08:54:14,699 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:14,700 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-07-25 08:54:14,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:14,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:14,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:54:14,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:54:14,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:54:14,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:14,939 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-25 08:54:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:14,985 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:54:14,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:54:14,985 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-25 08:54:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:14,986 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:54:14,986 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:54:14,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:54:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:54:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:54:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:54:14,990 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-25 08:54:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:14,990 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:54:14,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:54:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:54:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:54:14,991 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:14,992 INFO L354 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-25 08:54:14,992 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-07-25 08:54:14,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:15,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:15,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:54:15,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:54:15,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:54:15,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:15,237 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-25 08:54:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:15,296 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:54:15,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:54:15,297 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-25 08:54:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:15,297 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:54:15,298 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:54:15,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:54:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:54:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:54:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:54:15,302 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-25 08:54:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:15,302 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:54:15,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:54:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:54:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:54:15,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:15,303 INFO L354 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-25 08:54:15,303 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-07-25 08:54:15,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:15,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:15,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:54:15,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:54:15,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:54:15,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:15,561 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-25 08:54:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:15,621 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:54:15,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:54:15,622 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-25 08:54:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:15,622 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:54:15,623 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:54:15,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:54:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:54:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:54:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:54:15,626 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-25 08:54:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:15,627 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:54:15,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:54:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:54:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:54:15,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:15,628 INFO L354 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-25 08:54:15,628 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-07-25 08:54:15,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:15,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:15,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:54:15,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:54:15,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:54:15,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:15,895 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-25 08:54:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:15,948 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:54:15,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:54:15,948 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-25 08:54:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:15,949 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:54:15,949 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:54:15,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:54:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:54:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:54:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:54:15,953 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-25 08:54:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:15,953 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:54:15,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:54:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:54:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:54:15,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:15,954 INFO L354 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-25 08:54:15,955 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-07-25 08:54:15,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:16,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:16,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:54:16,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:54:16,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:54:16,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:16,200 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-25 08:54:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:16,259 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:54:16,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:54:16,259 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-25 08:54:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:16,260 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:54:16,260 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:54:16,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:54:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:54:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:54:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:54:16,264 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-25 08:54:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:16,264 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:54:16,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:54:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:54:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:54:16,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:16,265 INFO L354 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-25 08:54:16,266 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-07-25 08:54:16,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:16,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:16,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:54:16,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:54:16,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:54:16,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:16,519 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-25 08:54:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:16,576 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:54:16,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:54:16,577 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-25 08:54:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:16,577 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:54:16,577 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:54:16,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:54:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:54:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:54:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:54:16,581 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-25 08:54:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:16,582 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:54:16,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:54:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:54:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:54:16,583 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:16,583 INFO L354 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-25 08:54:16,583 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-07-25 08:54:16,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:16,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:16,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:54:16,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:54:16,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:54:16,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:16,829 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-25 08:54:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:16,890 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:54:16,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:54:16,891 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-25 08:54:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:16,891 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:54:16,892 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:54:16,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:54:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:54:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:54:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:54:16,896 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-25 08:54:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:16,896 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:54:16,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:54:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:54:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:54:16,897 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:16,897 INFO L354 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-25 08:54:16,897 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-07-25 08:54:16,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:17,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:17,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:54:17,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:54:17,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:54:17,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:17,137 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-25 08:54:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:17,199 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:54:17,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:54:17,199 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-25 08:54:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:17,200 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:54:17,200 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:54:17,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:54:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:54:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:54:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:54:17,204 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-25 08:54:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:17,204 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:54:17,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:54:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:54:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:54:17,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:17,205 INFO L354 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-25 08:54:17,205 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-07-25 08:54:17,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:17,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:17,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:54:17,458 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:54:17,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:54:17,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:17,460 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-25 08:54:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:17,501 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:54:17,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:54:17,501 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-25 08:54:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:17,502 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:54:17,502 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:54:17,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:54:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:54:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:54:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:54:17,508 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-25 08:54:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:17,508 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:54:17,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:54:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:54:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:54:17,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:17,510 INFO L354 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-25 08:54:17,511 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-07-25 08:54:17,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:17,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:17,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:54:17,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:54:17,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:54:17,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:17,768 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-25 08:54:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:17,806 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:54:17,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:54:17,806 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-25 08:54:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:17,807 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:54:17,807 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:54:17,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:54:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:54:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:54:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:54:17,811 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-25 08:54:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:17,811 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:54:17,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:54:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:54:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:54:17,812 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:17,812 INFO L354 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-25 08:54:17,813 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-07-25 08:54:17,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:18,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:18,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:54:18,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:54:18,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:54:18,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:18,077 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-25 08:54:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:18,141 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:54:18,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:54:18,141 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-25 08:54:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:18,142 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:54:18,142 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:54:18,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:54:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:54:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:54:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:54:18,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-25 08:54:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:18,146 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:54:18,146 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:54:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:54:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:54:18,147 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:18,147 INFO L354 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-25 08:54:18,148 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-07-25 08:54:18,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:18,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:18,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:54:18,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:54:18,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:54:18,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:18,438 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-25 08:54:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:18,512 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:54:18,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:54:18,512 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-25 08:54:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:18,514 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:54:18,514 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:54:18,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:54:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:54:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:54:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:54:18,519 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-25 08:54:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:18,519 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:54:18,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:54:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:54:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:54:18,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:18,520 INFO L354 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-25 08:54:18,521 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-07-25 08:54:18,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:18,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:18,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:54:18,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:54:18,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:54:18,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:18,863 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-25 08:54:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:18,909 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:54:18,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:54:18,909 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-25 08:54:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:18,910 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:54:18,910 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:54:18,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:54:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:54:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:54:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:54:18,914 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-25 08:54:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:18,914 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:54:18,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:54:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:54:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:54:18,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:18,915 INFO L354 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-25 08:54:18,915 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-07-25 08:54:18,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:19,160 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:19,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:54:19,161 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:54:19,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:54:19,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:54:19,162 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-25 08:54:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,217 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:54:19,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:54:19,217 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-25 08:54:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,218 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:54:19,218 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:54:19,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:54:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:54:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:54:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:54:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:54:19,223 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-25 08:54:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,223 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:54:19,223 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:54:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:54:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:54:19,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,224 INFO L354 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-25 08:54:19,225 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-07-25 08:54:19,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:19,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:19,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:54:19,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:54:19,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:54:19,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:54:19,471 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-25 08:54:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,551 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:54:19,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:54:19,551 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-25 08:54:19,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,552 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:54:19,552 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:54:19,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:54:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:54:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:54:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:54:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:54:19,556 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-25 08:54:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,556 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:54:19,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:54:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:54:19,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:54:19,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,557 INFO L354 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-25 08:54:19,557 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,558 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-07-25 08:54:19,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:19,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:19,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:54:19,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:54:19,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:54:19,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:54:19,835 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-25 08:54:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,877 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:54:19,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:54:19,877 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-25 08:54:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,878 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:54:19,878 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:54:19,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:54:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:54:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:54:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:54:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:54:19,881 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-25 08:54:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,882 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:54:19,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:54:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:54:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:54:19,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,883 INFO L354 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-25 08:54:19,883 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,883 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-07-25 08:54:19,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:20,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:54:20,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:54:20,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:54:20,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:54:20,145 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-25 08:54:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:20,232 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:54:20,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:54:20,232 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-25 08:54:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:20,233 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:54:20,233 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:54:20,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:54:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:54:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:54:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:54:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:54:20,237 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-25 08:54:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:20,237 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:54:20,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:54:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:54:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:54:20,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:20,238 INFO L354 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-25 08:54:20,238 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-07-25 08:54:20,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:20,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:54:20,494 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:54:20,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:54:20,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:54:20,496 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-25 08:54:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:20,532 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:54:20,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:54:20,532 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-25 08:54:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:20,533 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:54:20,533 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:54:20,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:54:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:54:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:54:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:54:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:54:20,538 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-25 08:54:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:20,538 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:54:20,538 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:54:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:54:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:54:20,539 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:20,539 INFO L354 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-25 08:54:20,539 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-07-25 08:54:20,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:20,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:54:20,843 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:54:20,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:54:20,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:54:20,844 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-25 08:54:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:20,981 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:54:20,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:54:20,981 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-25 08:54:20,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:20,982 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:54:20,982 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:54:20,982 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:54:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:54:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:54:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:54:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:54:20,985 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-25 08:54:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:20,985 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:54:20,985 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:54:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:54:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:54:20,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:20,986 INFO L354 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-25 08:54:20,986 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-07-25 08:54:20,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:21,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:21,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:54:21,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:54:21,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:54:21,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:21,276 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-25 08:54:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:21,328 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:54:21,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:54:21,328 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-25 08:54:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:21,329 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:54:21,329 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:54:21,330 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:54:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:54:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:54:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:54:21,333 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-25 08:54:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:21,333 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:54:21,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:54:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:54:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:54:21,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:21,334 INFO L354 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-25 08:54:21,334 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:21,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-07-25 08:54:21,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:21,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:21,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:54:21,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:54:21,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:54:21,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:21,673 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-25 08:54:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:21,773 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:54:21,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:54:21,773 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-25 08:54:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:21,774 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:54:21,774 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:54:21,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:54:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:54:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:54:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:54:21,777 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-25 08:54:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:21,778 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:54:21,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:54:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:54:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:54:21,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:21,778 INFO L354 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-25 08:54:21,779 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-07-25 08:54:21,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:22,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:22,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:54:22,083 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:54:22,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:54:22,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:54:22,085 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-25 08:54:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:22,156 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:54:22,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:54:22,156 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-25 08:54:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:22,157 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:54:22,157 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:54:22,157 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:54:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:54:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:54:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:54:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:54:22,160 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-25 08:54:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:22,161 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:54:22,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:54:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:54:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:54:22,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:22,161 INFO L354 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-25 08:54:22,162 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-07-25 08:54:22,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:22,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:22,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:54:22,444 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:54:22,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:54:22,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:22,446 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-25 08:54:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:22,495 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:54:22,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:54:22,495 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-25 08:54:22,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:22,496 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:54:22,496 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:54:22,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:54:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:54:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:54:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:54:22,500 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-25 08:54:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:22,500 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:54:22,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:54:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:54:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:54:22,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:22,501 INFO L354 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-25 08:54:22,501 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-07-25 08:54:22,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:22,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:22,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:54:22,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:54:22,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:54:22,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:22,787 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-25 08:54:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:22,850 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:54:22,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:54:22,850 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-25 08:54:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:22,851 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:54:22,851 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:54:22,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:54:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:54:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:54:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:54:22,854 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-25 08:54:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:22,855 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:54:22,855 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:54:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:54:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:54:22,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:22,855 INFO L354 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-25 08:54:22,856 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:22,856 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-07-25 08:54:22,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:23,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:23,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:54:23,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:54:23,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:54:23,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:54:23,151 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-25 08:54:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:23,266 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:54:23,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:54:23,267 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-25 08:54:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:23,267 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:54:23,267 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:54:23,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:54:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:54:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:54:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:54:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:54:23,272 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-25 08:54:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:23,272 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:54:23,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:54:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:54:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:54:23,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:23,273 INFO L354 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-25 08:54:23,273 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:23,274 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-07-25 08:54:23,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:23,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:23,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:54:23,655 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:54:23,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:54:23,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:54:23,656 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-25 08:54:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:23,729 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:54:23,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:54:23,729 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-25 08:54:23,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:23,730 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:54:23,730 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:54:23,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:54:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:54:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:54:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:54:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:54:23,733 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-25 08:54:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:23,733 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:54:23,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:54:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:54:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:54:23,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:23,734 INFO L354 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-25 08:54:23,734 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-07-25 08:54:23,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:23,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:23,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:54:23,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:54:23,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:54:23,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:23,982 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-25 08:54:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,036 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:54:24,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:54:24,036 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-25 08:54:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,037 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:54:24,037 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:54:24,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:54:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:54:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:54:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:54:24,040 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-25 08:54:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,041 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:54:24,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:54:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:54:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:54:24,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,041 INFO L354 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-25 08:54:24,042 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-07-25 08:54:24,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:24,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:54:24,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:54:24,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:54:24,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:24,287 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-25 08:54:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,335 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:54:24,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:54:24,335 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-25 08:54:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,336 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:54:24,336 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:54:24,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:54:24,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:54:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:54:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:54:24,339 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-25 08:54:24,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,340 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:54:24,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:54:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:54:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:54:24,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,341 INFO L354 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-25 08:54:24,341 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-07-25 08:54:24,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:24,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:54:24,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:54:24,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:54:24,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:24,589 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-25 08:54:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,636 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:54:24,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:54:24,636 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-25 08:54:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,637 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:54:24,637 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:54:24,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:54:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:54:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:54:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:54:24,640 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-25 08:54:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,640 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:54:24,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:54:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:54:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:54:24,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,641 INFO L354 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-25 08:54:24,642 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-07-25 08:54:24,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:24,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:54:24,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:54:24,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:54:24,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:24,898 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-25 08:54:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,950 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:54:24,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:54:24,950 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-25 08:54:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,951 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:54:24,951 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:54:24,951 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:54:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:54:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:54:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:54:24,954 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-25 08:54:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,954 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:54:24,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:54:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:54:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:54:24,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,955 INFO L354 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-25 08:54:24,955 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-07-25 08:54:24,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:25,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:54:25,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:54:25,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:54:25,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:54:25,237 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-25 08:54:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,290 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:54:25,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:54:25,290 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-25 08:54:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,291 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:54:25,291 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:54:25,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:54:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:54:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:54:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:54:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:54:25,295 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-25 08:54:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,295 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:54:25,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:54:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:54:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:54:25,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,296 INFO L354 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-25 08:54:25,296 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-07-25 08:54:25,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:25,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:54:25,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:54:25,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:54:25,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:25,602 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-25 08:54:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,654 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:54:25,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:54:25,654 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-25 08:54:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,655 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:54:25,655 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:54:25,656 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:54:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:54:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:54:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:54:25,659 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-25 08:54:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,659 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:54:25,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:54:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:54:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:54:25,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,660 INFO L354 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-25 08:54:25,660 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-07-25 08:54:25,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:25,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:54:25,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:54:25,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:54:25,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:25,923 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-25 08:54:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,987 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:54:25,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:54:25,987 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-25 08:54:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,988 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:54:25,988 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:54:25,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:54:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:54:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:54:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:54:25,992 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-25 08:54:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,992 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:54:25,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:54:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:54:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:54:25,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,993 INFO L354 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-25 08:54:25,993 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-07-25 08:54:25,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:26,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:54:26,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:54:26,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:54:26,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:26,297 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-25 08:54:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,372 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:54:26,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:54:26,372 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-25 08:54:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,373 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:54:26,373 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:54:26,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:26,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:54:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:54:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:54:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:54:26,377 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-25 08:54:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,378 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:54:26,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:54:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:54:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:54:26,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,378 INFO L354 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-25 08:54:26,379 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-07-25 08:54:26,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:26,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:54:26,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:54:26,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:54:26,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:54:26,661 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-25 08:54:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,762 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:54:26,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:54:26,763 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-25 08:54:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,763 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:54:26,763 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:54:26,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:54:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:54:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:54:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:54:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:54:26,767 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-25 08:54:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,767 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:54:26,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:54:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:54:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:54:26,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,768 INFO L354 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-25 08:54:26,768 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-07-25 08:54:26,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:27,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:54:27,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:54:27,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:54:27,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:27,064 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-25 08:54:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,177 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:54:27,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:54:27,177 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-25 08:54:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,178 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:54:27,178 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:54:27,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:54:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:54:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:54:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:54:27,182 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-25 08:54:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,182 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:54:27,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:54:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:54:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:54:27,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,183 INFO L354 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-25 08:54:27,183 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-07-25 08:54:27,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:27,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:54:27,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:54:27,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:54:27,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:54:27,600 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-25 08:54:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,697 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:54:27,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:54:27,697 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-25 08:54:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,698 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:54:27,698 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:54:27,698 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 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 08:54:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:54:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:54:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:54:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:54:27,700 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-25 08:54:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,701 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:54:27,701 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:54:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:54:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:54:27,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,702 INFO L354 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-25 08:54:27,702 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-07-25 08:54:27,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:27,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:54:27,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:54:27,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:54:27,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:54:27,991 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-25 08:54:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,045 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:54:28,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:54:28,045 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-25 08:54:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,046 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:54:28,046 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:54:28,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:54:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:54:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:54:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:54:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:54:28,049 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-25 08:54:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,049 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:54:28,050 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:54:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:54:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:54:28,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,050 INFO L354 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-25 08:54:28,051 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-07-25 08:54:28,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:28,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:54:28,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:54:28,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:54:28,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:54:28,389 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-25 08:54:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,493 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:54:28,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:54:28,494 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-25 08:54:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,494 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:54:28,494 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:54:28,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:54:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:54:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:54:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:54:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:54:28,498 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-25 08:54:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,499 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:54:28,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:54:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:54:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:54:28,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,500 INFO L354 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-25 08:54:28,500 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,500 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-07-25 08:54:28,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:28,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:54:28,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:54:28,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:54:28,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:54:28,795 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-25 08:54:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,893 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:54:28,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:54:28,893 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-25 08:54:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,894 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:54:28,894 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:54:28,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:54:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:54:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:54:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:54:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:54:28,898 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-25 08:54:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,898 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:54:28,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:54:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:54:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:54:28,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,899 INFO L354 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-25 08:54:28,900 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-07-25 08:54:28,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:29,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:54:29,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:54:29,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:54:29,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:54:29,277 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-25 08:54:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,352 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:54:29,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:54:29,352 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-25 08:54:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,352 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:54:29,353 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:54:29,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:54:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:54:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:54:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:54:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:54:29,357 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-25 08:54:29,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,357 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:54:29,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:54:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:54:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:54:29,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,358 INFO L354 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-25 08:54:29,358 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-07-25 08:54:29,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:29,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:54:29,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:54:29,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:54:29,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:54:29,699 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-25 08:54:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,839 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:54:29,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:54:29,840 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-25 08:54:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,841 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:54:29,841 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:54:29,842 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:54:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:54:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:54:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:54:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:54:29,846 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-25 08:54:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,846 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:54:29,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:54:29,846 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:54:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:54:29,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,847 INFO L354 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-25 08:54:29,847 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-07-25 08:54:29,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:30,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:30,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:54:30,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:54:30,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:54:30,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:54:30,303 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-25 08:54:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,364 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:54:30,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:54:30,364 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-25 08:54:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,365 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:54:30,365 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:54:30,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 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 08:54:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:54:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:54:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:54:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:54:30,369 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-25 08:54:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,369 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:54:30,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:54:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:54:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:54:30,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,370 INFO L354 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-25 08:54:30,370 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-07-25 08:54:30,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:30,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:30,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:54:30,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:54:30,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:54:30,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:54:30,709 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-25 08:54:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,844 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:54:30,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:54:30,845 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-25 08:54:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,845 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:54:30,845 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:54:30,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:54:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:54:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:54:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:54:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:54:30,848 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-25 08:54:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,848 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:54:30,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:54:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:54:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:54:30,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,849 INFO L354 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-25 08:54:30,849 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-07-25 08:54:30,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:54:31,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:54:31,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:54:31,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:54:31,175 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-25 08:54:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,273 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:54:31,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:54:31,273 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-25 08:54:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,273 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:54:31,274 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:54:31,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:54:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:54:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:54:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:54:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:54:31,276 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-25 08:54:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,277 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:54:31,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:54:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:54:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:54:31,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,277 INFO L354 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-25 08:54:31,277 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-07-25 08:54:31,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:54:31,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:54:31,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:54:31,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:54:31,588 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-25 08:54:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,742 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:54:31,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:54:31,743 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-25 08:54:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,743 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:54:31,743 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:54:31,747 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:54:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:54:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:54:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:54:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:54:31,751 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-25 08:54:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,751 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:54:31,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:54:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:54:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:54:31,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,752 INFO L354 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-25 08:54:31,752 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-07-25 08:54:31,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:54:32,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:54:32,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:54:32,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:54:32,318 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-25 08:54:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,482 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:54:32,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:54:32,482 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-25 08:54:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,483 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:54:32,483 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:54:32,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:54:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:54:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:54:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:54:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:54:32,488 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-25 08:54:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,489 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:54:32,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:54:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:54:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:54:32,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,490 INFO L354 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-25 08:54:32,490 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-07-25 08:54:32,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:54:32,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:54:32,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:54:32,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:54:32,930 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-25 08:54:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,089 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:54:33,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:54:33,090 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-25 08:54:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,090 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:54:33,091 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:54:33,091 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:54:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:54:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:54:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:54:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:54:33,095 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-25 08:54:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,095 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:54:33,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:54:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:54:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:54:33,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,097 INFO L354 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-25 08:54:33,097 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,097 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-07-25 08:54:33,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:54:33,444 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:54:33,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:54:33,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:54:33,446 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-25 08:54:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,552 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:54:33,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:54:33,552 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-25 08:54:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,552 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:54:33,552 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:54:33,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:54:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:54:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:54:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:54:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:54:33,555 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-25 08:54:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,555 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:54:33,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:54:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:54:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:54:33,556 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,556 INFO L354 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-25 08:54:33,556 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-07-25 08:54:33,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:54:33,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:54:33,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:54:33,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:54:33,884 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-25 08:54:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,011 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:54:34,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:54:34,012 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-25 08:54:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,012 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:54:34,013 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:54:34,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:54:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:54:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:54:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:54:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:54:34,016 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-25 08:54:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,016 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:54:34,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:54:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:54:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:54:34,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,017 INFO L354 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-25 08:54:34,017 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-07-25 08:54:34,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:54:34,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:54:34,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:54:34,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:54:34,370 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-25 08:54:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,496 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:54:34,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:54:34,496 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-25 08:54:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,497 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:54:34,497 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:54:34,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:54:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:54:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:54:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:54:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:54:34,499 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-25 08:54:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,500 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:54:34,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:54:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:54:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:54:34,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,501 INFO L354 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-25 08:54:34,501 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-07-25 08:54:34,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,889 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 08:54:34,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:54:34,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:54:34,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:54:34,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:54:34,891 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-25 08:54:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,952 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:54:34,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:54:34,952 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-25 08:54:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,953 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:54:34,953 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:54:34,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:54:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:54:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:54:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:54:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:54:34,957 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-25 08:54:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,957 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:54:34,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:54:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:54:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:54:34,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,958 INFO L354 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-25 08:54:34,959 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-07-25 08:54:34,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:54:35,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:54:35,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:54:35,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:54:35,566 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-25 08:54:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,684 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:54:35,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:54:35,684 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-25 08:54:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,685 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:54:35,685 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:54:35,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:54:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:54:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:54:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:54:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:54:35,689 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-25 08:54:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,689 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:54:35,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:54:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:54:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:54:35,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,690 INFO L354 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-25 08:54:35,690 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-07-25 08:54:35,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:54:36,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:54:36,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:54:36,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:54:36,088 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-25 08:54:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,217 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:54:36,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:54:36,218 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-25 08:54:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,218 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:54:36,218 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:54:36,219 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:54:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:54:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:54:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:54:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:54:36,223 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-25 08:54:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,223 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:54:36,223 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:54:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:54:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:54:36,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,224 INFO L354 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-25 08:54:36,224 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-07-25 08:54:36,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:54:36,697 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:54:36,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:54:36,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:54:36,699 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-25 08:54:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,855 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:54:36,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:54:36,855 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-25 08:54:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,856 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:54:36,856 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:54:36,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:54:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:54:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:54:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:54:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:54:36,860 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-25 08:54:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,860 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:54:36,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:54:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:54:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:54:36,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,861 INFO L354 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-25 08:54:36,861 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-07-25 08:54:36,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,272 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:54:37,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:54:37,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:54:37,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:54:37,274 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-25 08:54:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,379 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:54:37,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:54:37,379 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-25 08:54:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,379 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:54:37,380 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:54:37,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:54:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:54:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:54:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:54:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:54:37,383 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-25 08:54:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,383 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:54:37,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:54:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:54:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:54:37,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,384 INFO L354 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-25 08:54:37,385 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-07-25 08:54:37,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:54:37,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:54:37,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:54:37,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:54:37,856 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-25 08:54:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,051 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:54:38,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:54:38,051 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-25 08:54:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,051 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:54:38,051 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:54:38,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:54:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:54:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:54:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:54:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:54:38,056 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-25 08:54:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,057 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:54:38,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:54:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:54:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:54:38,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,058 INFO L354 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-25 08:54:38,058 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-07-25 08:54:38,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,531 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:54:38,531 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:54:38,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:54:38,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:54:38,533 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-25 08:54:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,626 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:54:38,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:54:38,627 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-25 08:54:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,627 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:54:38,627 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:54:38,628 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:54:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:54:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:54:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:54:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:54:38,632 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-25 08:54:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,632 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:54:38,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:54:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:54:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:54:38,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,633 INFO L354 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-25 08:54:38,633 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-07-25 08:54:38,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:54:39,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:54:39,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:54:39,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:54:39,064 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-25 08:54:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,312 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:54:39,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:54:39,312 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-25 08:54:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,313 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:54:39,313 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:54:39,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:54:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:54:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:54:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:54:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:54:39,317 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-25 08:54:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,317 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:54:39,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:54:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:54:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:54:39,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,318 INFO L354 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-25 08:54:39,319 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-07-25 08:54:39,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:54:39,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:54:39,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:54:39,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:54:39,790 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-25 08:54:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,880 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:54:39,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:54:39,881 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-25 08:54:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,881 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:54:39,881 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:54:39,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:54:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:54:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:54:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:54:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:54:39,886 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-25 08:54:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,886 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:54:39,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:54:39,886 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:54:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:54:39,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,887 INFO L354 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-25 08:54:39,887 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-07-25 08:54:39,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:40,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:54:40,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:54:40,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:54:40,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:54:40,438 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-25 08:54:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,605 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:54:40,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:54:40,605 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-25 08:54:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,606 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:54:40,606 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:54:40,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 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 08:54:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:54:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:54:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:54:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:54:40,610 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-25 08:54:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,610 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:54:40,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:54:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:54:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:54:40,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,611 INFO L354 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-25 08:54:40,611 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-07-25 08:54:40,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:54:41,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:54:41,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:54:41,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:54:41,088 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-25 08:54:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,273 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:54:41,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:54:41,273 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-25 08:54:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,273 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:54:41,273 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:54:41,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:54:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:54:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:54:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:54:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:54:41,276 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-25 08:54:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,277 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:54:41,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:54:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:54:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:54:41,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,277 INFO L354 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-25 08:54:41,277 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-07-25 08:54:41,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:54:41,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:54:41,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:54:41,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:54:41,729 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-25 08:54:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,886 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:54:41,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:54:41,886 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-25 08:54:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,887 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:54:41,887 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:54:41,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:54:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:54:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:54:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:54:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:54:41,891 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-25 08:54:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,891 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:54:41,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:54:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:54:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:54:41,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,892 INFO L354 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-25 08:54:41,892 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-07-25 08:54:41,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:42,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:54:42,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:54:42,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:54:42,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:54:42,306 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-25 08:54:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,475 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:54:42,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:54:42,475 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-25 08:54:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,476 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:54:42,476 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:54:42,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:54:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:54:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:54:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:54:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:54:42,479 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-25 08:54:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,479 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:54:42,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:54:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:54:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:54:42,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,480 INFO L354 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-25 08:54:42,480 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-07-25 08:54:42,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:42,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:54:42,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:54:42,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:54:42,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:54:42,978 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-25 08:54:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,155 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:54:43,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:54:43,155 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-25 08:54:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,155 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:54:43,155 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:54:43,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:54:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:54:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:54:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:54:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:54:43,159 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-25 08:54:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,159 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:54:43,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:54:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:54:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:54:43,160 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,160 INFO L354 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-25 08:54:43,160 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-07-25 08:54:43,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:54:43,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:54:43,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:54:43,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:54:43,601 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-25 08:54:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,749 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:54:43,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:54:43,749 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-25 08:54:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,749 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:54:43,750 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:54:43,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:54:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:54:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:54:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:54:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:54:43,754 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-25 08:54:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,754 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:54:43,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:54:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:54:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:54:43,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,755 INFO L354 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-25 08:54:43,755 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-07-25 08:54:43,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:54:44,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:54:44,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:54:44,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:54:44,377 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-25 08:54:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,577 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:54:44,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:54:44,577 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-25 08:54:44,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,578 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:54:44,578 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:54:44,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 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 08:54:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:54:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:54:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:54:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:54:44,581 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-25 08:54:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,581 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:54:44,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:54:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:54:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [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 [135, 1, 1, 1] [2018-07-25 08:54:44,583 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-07-25 08:54:44,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:54:45,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:54:45,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:54:45,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:54:45,091 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-25 08:54:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,381 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:54:45,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:54:45,381 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-25 08:54:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,382 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:54:45,382 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:54:45,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:54:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:54:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:54:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:54:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:54:45,385 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-25 08:54:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,386 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:54:45,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:54:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:54:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:54:45,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,387 INFO L354 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-25 08:54:45,387 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,387 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-07-25 08:54:45,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:54:45,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:54:45,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:54:45,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:54:45,882 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-25 08:54:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,978 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:54:45,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:54:45,978 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-25 08:54:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,979 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:54:45,979 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:54:45,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:54:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:54:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:54:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:54:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:54:45,982 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-25 08:54:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,982 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:54:45,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:54:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:54:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:54:45,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,983 INFO L354 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-25 08:54:45,983 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-07-25 08:54:45,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:54:46,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:54:46,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:54:46,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:54:46,468 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-25 08:54:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,686 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:54:46,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:54:46,686 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-25 08:54:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,687 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:54:46,687 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:54:46,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:54:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:54:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:54:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:54:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:54:46,690 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-25 08:54:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,690 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:54:46,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:54:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:54:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:54:46,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,691 INFO L354 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-25 08:54:46,691 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-07-25 08:54:46,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:54:47,148 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:54:47,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:54:47,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:54:47,150 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-25 08:54:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,361 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:54:47,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:54:47,361 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-25 08:54:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,362 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:54:47,362 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:54:47,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:54:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:54:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:54:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:54:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:54:47,365 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-25 08:54:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,365 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:54:47,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:54:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:54:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:54:47,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,366 INFO L354 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-25 08:54:47,366 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-07-25 08:54:47,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:54:47,865 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:54:47,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:54:47,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:54:47,867 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-25 08:54:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,184 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:54:48,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:54:48,184 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-25 08:54:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,185 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:54:48,185 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:54:48,186 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:54:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:54:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:54:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:54:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:54:48,188 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-25 08:54:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,188 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:54:48,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:54:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:54:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:54:48,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,188 INFO L354 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-25 08:54:48,189 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-07-25 08:54:48,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:54:48,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:54:48,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:54:48,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:54:48,698 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-25 08:54:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,953 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:54:48,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:54:48,953 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-25 08:54:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,954 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:54:48,954 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:54:48,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:54:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:54:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:54:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:54:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:54:48,957 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-25 08:54:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,957 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:54:48,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:54:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:54:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:54:48,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,958 INFO L354 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-25 08:54:48,958 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-07-25 08:54:48,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:54:49,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:54:49,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:54:49,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:54:49,517 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-25 08:54:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,620 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:54:49,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:54:49,620 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-25 08:54:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,620 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:54:49,620 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:54:49,621 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:54:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:54:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:54:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:54:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:54:49,623 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-25 08:54:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,623 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:54:49,624 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:54:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:54:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:54:49,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,624 INFO L354 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-25 08:54:49,624 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,624 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-07-25 08:54:49,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:54:50,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:54:50,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:54:50,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:54:50,302 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-25 08:54:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,454 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:54:50,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:54:50,454 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-25 08:54:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,455 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:54:50,455 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:54:50,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:54:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:54:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:54:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:54:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:54:50,458 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-25 08:54:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,458 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:54:50,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:54:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:54:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:54:50,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,459 INFO L354 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-25 08:54:50,459 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,459 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-07-25 08:54:50,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:54:51,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:54:51,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:54:51,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:54:51,153 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-25 08:54:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,390 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:54:51,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:54:51,390 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-25 08:54:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,390 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:54:51,390 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:54:51,391 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 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 08:54:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:54:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:54:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:54:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:54:51,393 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-25 08:54:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,393 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:54:51,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:54:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:54:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:54:51,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,394 INFO L354 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-25 08:54:51,394 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-07-25 08:54:51,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:54:51,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:54:51,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:54:51,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:54:51,874 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-25 08:54:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,142 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:54:52,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:54:52,142 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-25 08:54:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,143 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:54:52,143 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:54:52,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:54:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:54:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:54:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:54:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:54:52,146 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-25 08:54:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,146 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:54:52,146 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:54:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:54:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:54:52,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,147 INFO L354 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-25 08:54:52,147 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-07-25 08:54:52,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:54:52,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:54:52,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:54:52,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:54:52,647 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-25 08:54:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,910 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:54:52,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:54:52,910 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-25 08:54:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,911 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:54:52,911 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:54:52,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:54:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:54:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:54:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:54:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:54:52,914 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-25 08:54:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,915 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:54:52,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:54:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:54:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:54:52,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,916 INFO L354 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-25 08:54:52,916 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-07-25 08:54:52,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:54:53,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:54:53,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:54:53,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:54:53,438 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-25 08:54:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,708 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:54:53,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:54:53,709 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-25 08:54:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,709 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:54:53,709 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:54:53,711 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:54:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:54:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:54:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:54:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:54:53,714 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-25 08:54:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,714 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:54:53,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:54:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:54:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:54:53,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,715 INFO L354 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-25 08:54:53,715 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739526, now seen corresponding path program 147 times [2018-07-25 08:54:53,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:54:54,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:54:54,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:54:54,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:54:54,260 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-25 08:54:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,563 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:54:54,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:54:54,563 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-25 08:54:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,564 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:54:54,564 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:54:54,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:54:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:54:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:54:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:54:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:54:54,569 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-25 08:54:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,569 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:54:54,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:54:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:54:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:54:54,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,570 INFO L354 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-25 08:54:54,570 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash -101718816, now seen corresponding path program 148 times [2018-07-25 08:54:54,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:54:55,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:54:55,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:54:55,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:54:55,200 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-25 08:54:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,558 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:54:55,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:54:55,558 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-25 08:54:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,558 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:54:55,559 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:54:55,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:54:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:54:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:54:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:54:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:54:55,563 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-25 08:54:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,563 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:54:55,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:54:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:54:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:54:55,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,564 INFO L354 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-25 08:54:55,565 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680134, now seen corresponding path program 149 times [2018-07-25 08:54:55,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:54:56,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:54:56,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:54:56,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:54:56,139 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-25 08:54:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,473 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:54:56,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:54:56,473 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-25 08:54:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,474 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:54:56,474 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:54:56,475 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:54:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:54:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:54:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:54:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:54:56,478 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-25 08:54:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,478 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:54:56,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:54:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:54:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:54:56,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,479 INFO L354 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-25 08:54:56,479 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341920, now seen corresponding path program 150 times [2018-07-25 08:54:56,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,038 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:54:57,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:54:57,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:54:57,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:54:57,041 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-25 08:54:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,370 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:54:57,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:54:57,371 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-25 08:54:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,371 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:54:57,371 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:54:57,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:54:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:54:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:54:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:54:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:54:57,374 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-25 08:54:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,374 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:54:57,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:54:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:54:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:54:57,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,375 INFO L354 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-25 08:54:57,375 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824582, now seen corresponding path program 151 times [2018-07-25 08:54:57,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:54:57,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:54:57,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:54:57,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:54:57,942 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-25 08:54:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,263 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:54:58,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:54:58,263 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-25 08:54:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,263 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:54:58,263 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:54:58,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:54:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:54:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:54:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:54:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:54:58,266 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-25 08:54:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,267 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:54:58,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:54:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:54:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:54:58,267 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,268 INFO L354 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-25 08:54:58,268 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -56983968, now seen corresponding path program 152 times [2018-07-25 08:54:58,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:54:58,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:54:58,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:54:58,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:54:58,986 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-25 08:54:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,297 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:54:59,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:54:59,298 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-25 08:54:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,298 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:54:59,298 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:54:59,299 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:54:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:54:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:54:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:54:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:54:59,302 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-25 08:54:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,302 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:54:59,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:54:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:54:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:54:59,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,303 INFO L354 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-25 08:54:59,303 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506874, now seen corresponding path program 153 times [2018-07-25 08:54:59,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:59,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:54:59,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:54:59,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:54:59,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:54:59,924 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-25 08:55:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,273 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:55:00,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:55:00,273 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-25 08:55:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,273 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:55:00,273 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:55:00,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:55:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:55:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:55:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:55:00,277 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-25 08:55:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,278 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:55:00,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:55:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:55:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:55:00,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,279 INFO L354 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-25 08:55:00,279 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857888, now seen corresponding path program 154 times [2018-07-25 08:55:00,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:55:00,953 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:55:00,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:55:00,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:00,956 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-25 08:55:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,265 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:55:01,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:55:01,265 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-25 08:55:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,266 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:55:01,266 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:55:01,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:55:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:55:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:55:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:55:01,269 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-25 08:55:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,269 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:55:01,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:55:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:55:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:55:01,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,270 INFO L354 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-25 08:55:01,270 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147706, now seen corresponding path program 155 times [2018-07-25 08:55:01,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:55:01,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:55:01,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:55:01,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:01,954 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-25 08:55:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,191 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:55:02,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:55:02,191 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-25 08:55:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,192 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:55:02,192 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:55:02,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:55:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:55:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:55:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:55:02,195 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-25 08:55:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,196 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:55:02,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:55:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:55:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:55:02,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,196 INFO L354 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-25 08:55:02,196 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash 224155616, now seen corresponding path program 156 times [2018-07-25 08:55:02,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:55:02,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:55:02,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:55:02,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:02,909 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-25 08:55:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,065 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:55:03,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:55:03,065 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-25 08:55:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,066 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:55:03,066 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:55:03,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:55:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:55:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:55:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:55:03,069 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-25 08:55:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,069 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:55:03,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:55:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:55:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:55:03,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,070 INFO L354 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-25 08:55:03,070 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114362, now seen corresponding path program 157 times [2018-07-25 08:55:03,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:55:03,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:55:03,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:55:03,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:03,758 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-25 08:55:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,073 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:55:04,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:55:04,073 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-25 08:55:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,074 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:55:04,074 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:55:04,075 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:55:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:55:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:55:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:55:04,077 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-25 08:55:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,077 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:55:04,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:55:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:55:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:55:04,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,078 INFO L354 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-25 08:55:04,078 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash 665058464, now seen corresponding path program 158 times [2018-07-25 08:55:04,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:04,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:55:04,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:55:04,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:55:04,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:04,740 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-25 08:55:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,278 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:55:05,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:55:05,279 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-25 08:55:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,279 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:55:05,279 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:55:05,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:55:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:55:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:55:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:55:05,283 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-25 08:55:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,283 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:55:05,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:55:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:55:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:55:05,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,284 INFO L354 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-25 08:55:05,284 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash -858027962, now seen corresponding path program 159 times [2018-07-25 08:55:05,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:55:05,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:55:05,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:55:05,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:55:05,984 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-25 08:55:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,512 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:55:06,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:55:06,512 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-25 08:55:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,512 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:55:06,513 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:55:06,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:55:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:55:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:55:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:55:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:55:06,517 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-25 08:55:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,518 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:55:06,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:55:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:55:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:55:06,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,518 INFO L354 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-25 08:55:06,519 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash -829066912, now seen corresponding path program 160 times [2018-07-25 08:55:06,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:07,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:55:07,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:55:07,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:55:07,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:55:07,386 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-25 08:55:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:07,809 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:55:07,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:55:07,809 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-25 08:55:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:07,810 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:55:07,810 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:55:07,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:55:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:55:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:55:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:55:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:55:07,813 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-25 08:55:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:07,814 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:55:07,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:55:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:55:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:55:07,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:07,815 INFO L354 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-25 08:55:07,815 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:07,815 INFO L82 PathProgramCache]: Analyzing trace with hash 68725638, now seen corresponding path program 161 times [2018-07-25 08:55:07,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:08,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:55:08,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:55:08,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:55:08,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:55:08,601 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-25 08:55:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,772 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:55:08,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:55:08,772 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-25 08:55:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,772 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:55:08,772 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:55:08,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:55:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:55:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:55:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:55:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:55:08,777 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-25 08:55:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,777 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:55:08,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:55:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:55:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:55:08,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,779 INFO L354 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-25 08:55:08,779 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490912, now seen corresponding path program 162 times [2018-07-25 08:55:08,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:09,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:55:09,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:55:09,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:55:09,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:55:09,584 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-25 08:55:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,942 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:55:09,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:55:09,942 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-25 08:55:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,942 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:55:09,942 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:55:09,944 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:55:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:55:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:55:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:55:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:55:09,946 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-25 08:55:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,946 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:55:09,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:55:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:55:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:55:09,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,947 INFO L354 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-25 08:55:09,947 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704966, now seen corresponding path program 163 times [2018-07-25 08:55:09,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:10,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:10,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:55:10,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:55:10,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:55:10,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:55:10,659 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-25 08:55:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,121 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:55:11,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:55:11,121 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-25 08:55:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,122 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:55:11,122 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:55:11,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:55:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:55:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:55:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:55:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:55:11,126 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-25 08:55:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,126 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:55:11,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:55:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:55:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:55:11,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,127 INFO L354 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-25 08:55:11,127 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757472, now seen corresponding path program 164 times [2018-07-25 08:55:11,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:55:11,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:55:11,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:55:11,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:55:11,831 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-25 08:55:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:12,150 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:55:12,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:55:12,150 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-25 08:55:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:12,150 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:55:12,150 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:55:12,151 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:55:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:55:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:55:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:55:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:55:12,153 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-25 08:55:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:12,153 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:55:12,154 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:55:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:55:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:55:12,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:12,154 INFO L354 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-25 08:55:12,154 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779834, now seen corresponding path program 165 times [2018-07-25 08:55:12,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:12,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:55:12,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:55:12,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:55:12,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:55:12,822 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-25 08:55:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:13,039 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:55:13,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:55:13,039 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-25 08:55:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:13,039 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:55:13,039 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:55:13,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:55:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:55:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:55:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:55:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:55:13,044 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-25 08:55:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:13,044 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:55:13,044 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:55:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:55:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:55:13,045 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:13,045 INFO L354 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-25 08:55:13,045 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:13,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538464, now seen corresponding path program 166 times [2018-07-25 08:55:13,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:13,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:55:13,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:55:13,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:55:13,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:13,806 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-25 08:55:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,359 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:55:14,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:55:14,360 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-25 08:55:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,360 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:55:14,360 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:55:14,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:55:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:55:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:55:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:55:14,364 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-25 08:55:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,364 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:55:14,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:55:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:55:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:55:14,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,365 INFO L354 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-25 08:55:14,366 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911302, now seen corresponding path program 167 times [2018-07-25 08:55:14,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:15,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:15,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:55:15,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:55:15,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:55:15,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:55:15,171 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-25 08:55:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,542 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:55:15,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:55:15,542 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-25 08:55:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,542 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:55:15,542 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:55:15,544 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:55:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:55:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:55:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:55:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:55:15,546 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-25 08:55:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,546 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:55:15,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:55:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:55:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:55:15,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,547 INFO L354 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-25 08:55:15,547 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash -68328352, now seen corresponding path program 168 times [2018-07-25 08:55:15,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:16,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:55:16,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:55:16,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:55:16,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:16,283 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-25 08:55:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:16,566 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:55:16,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:55:16,567 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-25 08:55:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:16,567 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:55:16,567 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:55:16,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:55:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:55:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:55:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:55:16,570 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-25 08:55:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:16,570 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:55:16,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:55:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:55:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:55:16,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:16,571 INFO L354 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-25 08:55:16,571 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:16,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182778, now seen corresponding path program 169 times [2018-07-25 08:55:16,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:17,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:55:17,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:55:17,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:55:17,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:17,338 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-25 08:55:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:17,992 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:55:17,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:55:17,992 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-25 08:55:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:17,993 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:55:17,993 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:55:17,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:55:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:55:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:55:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:55:17,998 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-25 08:55:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:17,998 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:55:17,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:55:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:55:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:55:17,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:17,999 INFO L354 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-25 08:55:17,999 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160544, now seen corresponding path program 170 times [2018-07-25 08:55:17,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:18,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:55:18,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:55:18,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:55:18,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:18,869 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-25 08:55:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:19,046 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:55:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:55:19,046 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-25 08:55:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:19,047 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:55:19,047 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:55:19,049 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:55:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:55:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:55:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:55:19,052 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-25 08:55:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:19,052 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:55:19,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:55:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:55:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:55:19,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:19,053 INFO L354 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-25 08:55:19,053 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 240724934, now seen corresponding path program 171 times [2018-07-25 08:55:19,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:19,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:19,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:55:19,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:55:19,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:55:19,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:19,910 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-25 08:55:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,468 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:55:20,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:55:20,468 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-25 08:55:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,469 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:55:20,469 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:55:20,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:55:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:55:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:55:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:55:20,473 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-25 08:55:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,473 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:55:20,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:55:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:55:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:55:20,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,474 INFO L354 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-25 08:55:20,474 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465504, now seen corresponding path program 172 times [2018-07-25 08:55:20,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:21,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:21,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:55:21,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:55:21,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:55:21,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:21,262 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-25 08:55:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:21,575 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:55:21,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:55:21,575 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-25 08:55:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:21,576 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:55:21,576 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:55:21,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:55:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:55:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:55:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:55:21,580 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-25 08:55:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:21,581 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:55:21,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:55:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:55:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:55:21,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:21,582 INFO L354 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-25 08:55:21,582 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -591696122, now seen corresponding path program 173 times [2018-07-25 08:55:21,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:22,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:55:22,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:55:22,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:55:22,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:55:22,384 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-25 08:55:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,934 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:55:22,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:55:22,934 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-25 08:55:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,935 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:55:22,935 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:55:22,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:55:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:55:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:55:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:55:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:55:22,939 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-25 08:55:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,939 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:55:22,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:55:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:55:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:55:22,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,940 INFO L354 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-25 08:55:22,940 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714464, now seen corresponding path program 174 times [2018-07-25 08:55:22,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:23,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:23,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:55:23,767 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:55:23,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:55:23,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:55:23,770 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-25 08:55:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:24,163 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:55:24,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:55:24,164 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-25 08:55:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:24,164 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:55:24,164 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:55:24,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:55:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:55:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:55:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:55:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:55:24,168 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-25 08:55:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:24,168 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:55:24,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:55:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:55:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:55:24,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:24,169 INFO L354 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-25 08:55:24,169 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413882, now seen corresponding path program 175 times [2018-07-25 08:55:24,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:25,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:25,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:55:25,033 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:55:25,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:55:25,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:55:25,037 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-25 08:55:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:25,746 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:55:25,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:55:25,747 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-25 08:55:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:25,747 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:55:25,747 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:55:25,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:55:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:55:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:55:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:55:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:55:25,751 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-25 08:55:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:25,752 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:55:25,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:55:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:55:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:55:25,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:25,752 INFO L354 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-25 08:55:25,753 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:25,753 INFO L82 PathProgramCache]: Analyzing trace with hash -677226656, now seen corresponding path program 176 times [2018-07-25 08:55:25,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:26,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:26,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:55:26,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:55:26,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:55:26,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:55:26,690 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-25 08:55:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:27,113 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:55:27,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:55:27,114 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-25 08:55:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:27,114 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:55:27,114 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:55:27,116 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:55:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:55:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:55:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:55:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:55:27,119 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-25 08:55:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:27,119 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:55:27,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:55:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:55:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:55:27,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:27,120 INFO L354 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-25 08:55:27,120 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash 480806278, now seen corresponding path program 177 times [2018-07-25 08:55:27,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:28,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:28,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:55:28,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:55:28,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:55:28,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:55:28,012 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-25 08:55:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:28,721 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:55:28,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:55:28,721 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-25 08:55:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:28,722 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:55:28,722 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:55:28,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:55:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:55:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:55:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:55:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:55:28,726 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-25 08:55:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:28,727 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:55:28,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:55:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:55:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:55:28,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:28,727 INFO L354 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-25 08:55:28,727 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088864, now seen corresponding path program 178 times [2018-07-25 08:55:28,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:29,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:29,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:55:29,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:55:29,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:55:29,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:55:29,581 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-25 08:55:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:29,834 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:55:29,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:55:29,834 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-25 08:55:29,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:29,835 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:55:29,835 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:55:29,836 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:55:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:55:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:55:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:55:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:55:29,840 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-25 08:55:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:29,840 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:55:29,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:55:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:55:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:55:29,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:29,841 INFO L354 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-25 08:55:29,841 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758522, now seen corresponding path program 179 times [2018-07-25 08:55:29,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:30,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:30,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:55:30,699 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:55:30,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:55:30,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:55:30,703 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-25 08:55:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:31,356 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:55:31,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:55:31,356 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-25 08:55:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:31,356 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:55:31,357 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:55:31,359 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:55:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:55:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:55:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:55:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:55:31,361 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-25 08:55:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:31,361 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:55:31,361 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:55:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:55:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:55:31,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:31,362 INFO L354 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-25 08:55:31,362 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash -19943200, now seen corresponding path program 180 times [2018-07-25 08:55:31,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:32,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:55:32,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:55:32,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:55:32,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:55:32,199 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-25 08:55:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,479 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:55:32,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:55:32,479 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-25 08:55:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,480 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:55:32,480 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:55:32,482 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:55:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:55:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:55:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:55:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:55:32,485 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-25 08:55:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,486 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:55:32,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:55:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:55:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:55:32,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,487 INFO L354 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-25 08:55:32,487 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -618243066, now seen corresponding path program 181 times [2018-07-25 08:55:32,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:33,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:33,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:55:33,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:55:33,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:55:33,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:55:33,376 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-25 08:55:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:33,868 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:55:33,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:55:33,868 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-25 08:55:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:33,868 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:55:33,869 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:55:33,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:55:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:55:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:55:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:55:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:55:33,872 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-25 08:55:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:33,872 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:55:33,872 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:55:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:55:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:55:33,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:33,872 INFO L354 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-25 08:55:33,873 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:33,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669728, now seen corresponding path program 182 times [2018-07-25 08:55:33,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:34,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:34,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:55:34,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:55:34,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:55:34,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:55:34,807 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-25 08:55:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:35,563 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:55:35,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:55:35,563 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-25 08:55:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:35,564 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:55:35,564 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:55:35,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:55:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:55:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:55:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:55:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:55:35,568 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-25 08:55:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:35,568 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:55:35,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:55:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:55:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:55:35,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:35,569 INFO L354 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-25 08:55:35,569 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223290, now seen corresponding path program 183 times [2018-07-25 08:55:35,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:36,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:36,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:55:36,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:55:36,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:55:36,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:55:36,537 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-25 08:55:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:36,758 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:55:36,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:55:36,758 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-25 08:55:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:36,758 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:55:36,758 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:55:36,760 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:55:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:55:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:55:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:55:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:55:36,762 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-25 08:55:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:36,762 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:55:36,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:55:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:55:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:55:36,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:36,763 INFO L354 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-25 08:55:36,763 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:36,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252896, now seen corresponding path program 184 times [2018-07-25 08:55:36,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:37,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:37,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:55:37,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:55:37,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:55:37,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:55:37,695 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-25 08:55:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:38,240 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:55:38,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:55:38,240 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-25 08:55:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:38,240 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:55:38,240 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:55:38,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:55:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:55:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:55:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:55:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:55:38,244 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-25 08:55:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:38,244 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:55:38,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:55:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:55:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:55:38,244 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:38,244 INFO L354 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-25 08:55:38,245 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash -506137978, now seen corresponding path program 185 times [2018-07-25 08:55:38,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:39,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:39,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:55:39,195 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:55:39,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:55:39,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:55:39,199 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-25 08:55:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:40,181 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:55:40,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:55:40,181 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-25 08:55:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:40,181 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:55:40,181 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:55:40,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:55:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:55:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:55:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:55:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:55:40,185 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-25 08:55:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:40,185 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:55:40,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:55:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:55:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:55:40,186 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:40,186 INFO L354 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-25 08:55:40,186 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1489588000, now seen corresponding path program 186 times [2018-07-25 08:55:40,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:41,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:41,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:55:41,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:55:41,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:55:41,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:55:41,108 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-25 08:55:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,464 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:55:41,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:55:41,465 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-25 08:55:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,465 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:55:41,465 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:55:41,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:55:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:55:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:55:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:55:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:55:41,469 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-25 08:55:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,469 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:55:41,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:55:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:55:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:55:41,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,470 INFO L354 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-25 08:55:41,470 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416122, now seen corresponding path program 187 times [2018-07-25 08:55:41,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:42,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:42,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:55:42,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:55:42,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:55:42,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:55:42,543 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-25 08:55:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:42,909 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:55:42,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:55:42,909 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-25 08:55:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:42,910 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:55:42,910 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:55:42,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:55:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:55:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:55:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:55:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:55:42,913 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-25 08:55:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:42,913 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:55:42,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:55:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:55:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:55:42,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:42,914 INFO L354 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-25 08:55:42,914 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834720, now seen corresponding path program 188 times [2018-07-25 08:55:42,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:43,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:43,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:55:43,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:55:43,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:55:43,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:55:43,962 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-25 08:55:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:44,949 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:55:44,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:55:44,949 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-25 08:55:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:44,950 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:55:44,950 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:55:44,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:55:44,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:55:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:55:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:55:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:55:44,956 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-25 08:55:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:44,957 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:55:44,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:55:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:55:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:55:44,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:44,958 INFO L354 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-25 08:55:44,958 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash 710166790, now seen corresponding path program 189 times [2018-07-25 08:55:44,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:46,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:46,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:55:46,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:55:46,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:55:46,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:55:46,147 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-25 08:55:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:47,184 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:55:47,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:55:47,184 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-25 08:55:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:47,185 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:55:47,185 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:55:47,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:55:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:55:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:55:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:55:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:55:47,190 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-25 08:55:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:47,190 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:55:47,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:55:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:55:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:55:47,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:47,191 INFO L354 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-25 08:55:47,191 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:47,192 INFO L82 PathProgramCache]: Analyzing trace with hash 540330144, now seen corresponding path program 190 times [2018-07-25 08:55:47,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:48,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:48,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:55:48,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:55:48,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:55:48,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:55:48,273 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-25 08:55:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:48,899 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:55:48,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:55:48,899 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-25 08:55:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:48,899 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:55:48,899 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:55:48,901 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:55:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:55:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:55:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:55:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:55:48,903 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-25 08:55:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:48,904 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:55:48,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:55:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:55:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:55:48,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:48,904 INFO L354 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-25 08:55:48,905 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash -429638586, now seen corresponding path program 191 times [2018-07-25 08:55:48,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:50,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:50,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:55:50,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:55:50,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:55:50,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:55:50,153 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-25 08:55:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:50,478 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:55:50,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:55:50,479 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-25 08:55:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:50,479 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:55:50,479 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:55:50,481 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:55:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:55:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:55:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:55:50,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:55:50,484 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-25 08:55:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:50,484 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:55:50,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:55:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:55:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:55:50,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:50,486 INFO L354 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-25 08:55:50,486 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:50,486 INFO L82 PathProgramCache]: Analyzing trace with hash -433898144, now seen corresponding path program 192 times [2018-07-25 08:55:50,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:51,797 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:51,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:55:51,797 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:55:51,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:55:51,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:55:51,803 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-25 08:55:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:52,281 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:55:52,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:55:52,281 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-25 08:55:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:52,281 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:55:52,282 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:55:52,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:55:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:55:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:55:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:55:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:55:52,287 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-25 08:55:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:52,288 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:55:52,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:55:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:55:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:55:52,289 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:52,289 INFO L354 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-25 08:55:52,289 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash -565944442, now seen corresponding path program 193 times [2018-07-25 08:55:52,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:53,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:53,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:55:53,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:55:53,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:55:53,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:55:53,659 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-25 08:55:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:54,460 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:55:54,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:55:54,460 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-25 08:55:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:54,460 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:55:54,460 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:55:54,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:55:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:55:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:55:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:55:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:55:54,466 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-25 08:55:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:54,467 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:55:54,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:55:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:55:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:55:54,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:54,468 INFO L354 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-25 08:55:54,468 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -364412384, now seen corresponding path program 194 times [2018-07-25 08:55:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:55,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:55:55,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:55:55,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:55:55,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:55:55,887 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-25 08:55:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:56,997 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:55:56,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:55:56,997 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-25 08:55:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:56,998 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:55:56,998 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:55:57,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:55:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:55:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:55:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:55:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:55:57,003 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-25 08:55:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:57,003 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:55:57,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:55:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:55:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:55:57,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:57,004 INFO L354 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-25 08:55:57,004 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114118, now seen corresponding path program 195 times [2018-07-25 08:55:57,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:58,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:58,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:55:58,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:55:58,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:55:58,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:55:58,340 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-25 08:55:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:59,266 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:55:59,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:55:59,266 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-25 08:55:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:59,267 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:55:59,267 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:55:59,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:55:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:55:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:55:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:55:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:55:59,271 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-25 08:55:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:59,271 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:55:59,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:55:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:55:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:55:59,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:59,271 INFO L354 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-25 08:55:59,272 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893536, now seen corresponding path program 196 times [2018-07-25 08:55:59,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:00,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:00,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:56:00,480 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:56:00,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:56:00,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:00,485 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-25 08:56:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:01,494 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:56:01,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:56:01,494 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-25 08:56:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:01,495 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:56:01,495 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:56:01,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:56:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:56:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:56:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:56:01,502 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-25 08:56:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:01,502 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:56:01,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:56:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:56:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:56:01,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:01,503 INFO L354 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-25 08:56:01,504 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153606, now seen corresponding path program 197 times [2018-07-25 08:56:01,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:02,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:02,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:56:02,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:56:02,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:56:02,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:02,831 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-25 08:56:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,820 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:56:03,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:56:03,820 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-25 08:56:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,821 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:56:03,821 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:56:03,823 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:56:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:56:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:56:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:56:03,825 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-25 08:56:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,826 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:56:03,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:56:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:56:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:56:03,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,826 INFO L354 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-25 08:56:03,827 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882336, now seen corresponding path program 198 times [2018-07-25 08:56:03,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:56:05,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:56:05,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:56:05,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:05,046 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-25 08:56:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,928 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:56:05,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:56:05,928 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-25 08:56:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,929 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:56:05,929 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:56:05,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:56:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:56:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:56:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:56:05,933 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-25 08:56:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,933 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:56:05,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:56:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:56:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:56:05,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,934 INFO L354 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-25 08:56:05,934 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781434, now seen corresponding path program 199 times [2018-07-25 08:56:05,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:56:07,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:56:07,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:56:07,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:56:07,238 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-25 08:56:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,042 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:56:08,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:56:08,042 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-25 08:56:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,042 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:56:08,042 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:56:08,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:56:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:56:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:56:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:56:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:56:08,047 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-25 08:56:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,047 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:56:08,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:56:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:56:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:56:08,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,048 INFO L354 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-25 08:56:08,048 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620768, now seen corresponding path program 200 times [2018-07-25 08:56:08,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:56:09,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:56:09,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:56:09,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:56:09,356 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-25 08:56:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,104 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:56:10,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:56:10,104 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-25 08:56:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,104 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:56:10,105 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:56:10,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:56:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:56:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:56:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:56:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:56:10,108 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-25 08:56:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,108 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:56:10,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:56:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:56:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:56:10,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,109 INFO L354 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-25 08:56:10,109 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,109 INFO L82 PathProgramCache]: Analyzing trace with hash 519490694, now seen corresponding path program 201 times [2018-07-25 08:56:10,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:56:11,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:56:11,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:56:11,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:56:11,457 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-25 08:56:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,294 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:56:12,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:56:12,294 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-25 08:56:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,295 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:56:12,295 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:56:12,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:56:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:56:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:56:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:56:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:56:12,299 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-25 08:56:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,300 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:56:12,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:56:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:56:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:56:12,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,300 INFO L354 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-25 08:56:12,300 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661536, now seen corresponding path program 202 times [2018-07-25 08:56:12,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:56:13,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:56:13,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:56:13,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:13,639 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-25 08:56:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,732 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:56:14,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:56:14,732 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-25 08:56:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,733 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:56:14,733 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:56:14,736 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:56:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:56:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:56:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:56:14,738 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-25 08:56:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,739 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:56:14,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:56:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:56:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:56:14,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,740 INFO L354 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-25 08:56:14,740 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226886, now seen corresponding path program 203 times [2018-07-25 08:56:14,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:56:16,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:56:16,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:56:16,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:56:16,154 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-25 08:56:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,289 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:56:17,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:56:17,289 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-25 08:56:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,290 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:56:17,290 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:56:17,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:56:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:56:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:56:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:56:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:56:17,296 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-25 08:56:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,296 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:56:17,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:56:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:56:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:56:17,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,297 INFO L354 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-25 08:56:17,297 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258528, now seen corresponding path program 204 times [2018-07-25 08:56:17,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:56:18,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:56:18,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:56:18,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:18,725 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-25 08:56:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,944 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:56:19,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:56:19,944 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-25 08:56:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,945 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:56:19,945 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:56:19,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:56:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:56:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:56:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:56:19,950 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-25 08:56:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,950 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:56:19,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:56:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:56:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:56:19,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,951 INFO L354 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-25 08:56:19,951 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash -285662458, now seen corresponding path program 205 times [2018-07-25 08:56:19,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:56:21,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:56:21,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:56:21,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:21,406 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-25 08:56:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,828 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:56:22,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:56:22,828 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-25 08:56:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,828 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:56:22,829 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:56:22,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:56:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:56:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:56:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:56:22,832 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-25 08:56:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,832 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:56:22,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:56:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:56:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:56:22,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,833 INFO L354 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-25 08:56:22,833 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,833 INFO L82 PathProgramCache]: Analyzing trace with hash -265605472, now seen corresponding path program 206 times [2018-07-25 08:56:22,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:56:24,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:56:24,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:56:24,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:24,206 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-25 08:56:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,345 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:56:25,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:56:25,345 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-25 08:56:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,346 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:56:25,346 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:56:25,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:56:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:56:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:56:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:56:25,351 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-25 08:56:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,351 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:56:25,351 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:56:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:56:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:56:25,352 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,352 INFO L354 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-25 08:56:25,352 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,352 INFO L82 PathProgramCache]: Analyzing trace with hash 356161094, now seen corresponding path program 207 times [2018-07-25 08:56:25,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:56:26,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:56:26,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:56:26,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:56:26,771 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-25 08:56:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,501 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:56:27,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:56:27,501 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-25 08:56:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,501 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:56:27,501 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:56:27,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:56:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:56:27,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:56:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:56:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:56:27,506 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-25 08:56:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,506 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:56:27,507 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:56:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:56:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:56:27,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,508 INFO L354 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-25 08:56:27,508 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911840, now seen corresponding path program 208 times [2018-07-25 08:56:27,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:56:29,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:56:29,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:56:29,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:56:29,176 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-25 08:56:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,876 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:56:29,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:56:29,876 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-25 08:56:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,877 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:56:29,877 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:56:29,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:56:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:56:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:56:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:56:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:56:29,882 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-25 08:56:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,882 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:56:29,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:56:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:56:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:56:29,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,883 INFO L354 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-25 08:56:29,883 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696058, now seen corresponding path program 209 times [2018-07-25 08:56:29,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:56:31,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:56:31,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:56:31,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:56:31,371 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-25 08:56:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,051 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:56:32,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:56:32,052 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-25 08:56:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,052 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:56:32,052 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:56:32,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:56:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:56:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:56:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:56:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:56:32,057 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-25 08:56:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,057 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:56:32,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:56:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:56:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:56:32,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,058 INFO L354 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-25 08:56:32,058 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091296, now seen corresponding path program 210 times [2018-07-25 08:56:32,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:33,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:56:33,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:56:33,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:56:33,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:56:33,578 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-25 08:56:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,896 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:56:34,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:56:34,897 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-25 08:56:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,897 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:56:34,897 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:56:34,899 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:56:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:56:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:56:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:56:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:56:34,901 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-25 08:56:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,902 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:56:34,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:56:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:56:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:56:34,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,902 INFO L354 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-25 08:56:34,903 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,903 INFO L82 PathProgramCache]: Analyzing trace with hash 650251462, now seen corresponding path program 211 times [2018-07-25 08:56:34,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:56:36,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:56:36,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:56:36,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:56:36,425 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-25 08:56:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,132 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:56:38,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:56:38,133 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-25 08:56:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,133 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:56:38,133 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:56:38,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:56:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:56:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:56:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:56:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:56:38,139 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-25 08:56:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,139 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:56:38,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:56:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:56:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:56:38,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,140 INFO L354 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-25 08:56:38,140 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045024, now seen corresponding path program 212 times [2018-07-25 08:56:38,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:56:39,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:56:39,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:56:39,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:56:39,591 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-25 08:56:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,376 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:56:40,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:56:40,376 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-25 08:56:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,377 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:56:40,377 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:56:40,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:56:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:56:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:56:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:56:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:56:40,381 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-25 08:56:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,381 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:56:40,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:56:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:56:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:56:40,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,382 INFO L354 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-25 08:56:40,382 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273350, now seen corresponding path program 213 times [2018-07-25 08:56:40,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:56:41,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:56:41,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:56:41,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:56:41,950 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-25 08:56:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,334 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:56:42,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:56:42,334 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-25 08:56:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,335 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:56:42,335 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:56:42,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:56:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:56:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:56:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:56:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:56:42,339 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-25 08:56:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,339 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:56:42,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:56:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:56:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:56:42,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,340 INFO L354 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-25 08:56:42,340 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960544, now seen corresponding path program 214 times [2018-07-25 08:56:42,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:56:43,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:56:43,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:56:43,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:56:43,716 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-25 08:56:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,569 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:56:44,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:56:44,569 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-25 08:56:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,569 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:56:44,569 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:56:44,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:56:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:56:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:56:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:56:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:56:44,573 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-25 08:56:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:44,574 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:56:44,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:56:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:56:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:56:44,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:44,574 INFO L354 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-25 08:56:44,574 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1565899962, now seen corresponding path program 215 times [2018-07-25 08:56:44,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:46,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:46,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:56:46,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:56:46,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:56:46,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:56:46,007 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-25 08:56:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:47,438 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:56:47,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:56:47,438 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-25 08:56:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:47,439 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:56:47,439 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:56:47,441 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:56:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:56:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:56:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:56:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:56:47,444 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-25 08:56:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:47,444 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:56:47,444 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:56:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:56:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:56:47,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:47,445 INFO L354 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-25 08:56:47,445 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262432, now seen corresponding path program 216 times [2018-07-25 08:56:47,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:56:48,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:56:48,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:56:48,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:56:48,964 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-25 08:56:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:49,932 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:56:49,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:56:49,932 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-25 08:56:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:49,933 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:56:49,933 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:56:49,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:56:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:56:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:56:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:56:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:56:49,938 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-25 08:56:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,938 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:56:49,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:56:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:56:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:56:49,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,939 INFO L354 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-25 08:56:49,939 INFO L415 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433594, now seen corresponding path program 217 times [2018-07-25 08:56:49,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:51,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:51,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:56:51,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:56:51,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:56:51,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:56:51,479 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-25 08:56:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,385 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:56:52,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:56:52,386 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-25 08:56:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,386 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:56:52,386 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:56:52,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:56:52,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:56:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:56:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:56:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:56:52,391 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-25 08:56:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,391 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:56:52,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:56:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:56:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:56:52,391 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,391 INFO L354 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-25 08:56:52,392 INFO L415 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805024, now seen corresponding path program 218 times [2018-07-25 08:56:52,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:53,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:53,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:56:53,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:56:53,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:56:53,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:56:53,933 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-25 08:56:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:55,829 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:56:55,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:56:55,829 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-25 08:56:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:55,830 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:56:55,830 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:56:55,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:56:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:56:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:56:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:56:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:56:55,834 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-25 08:56:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:55,835 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:56:55,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:56:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:56:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:56:55,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:55,835 INFO L354 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-25 08:56:55,836 INFO L415 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash -359450170, now seen corresponding path program 219 times [2018-07-25 08:56:55,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:56:57,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:56:57,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:56:57,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:56:57,605 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-25 08:56:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:58,166 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:56:58,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:56:58,166 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-25 08:56:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:58,167 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:56:58,167 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:56:58,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:56:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:56:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:56:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:56:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:56:58,171 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-25 08:56:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:58,172 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:56:58,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:56:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:56:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:56:58,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:58,173 INFO L354 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-25 08:56:58,173 INFO L415 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:58,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942752, now seen corresponding path program 220 times [2018-07-25 08:56:58,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:56:59,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:56:59,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:56:59,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:56:59,924 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-25 08:57:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:01,096 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:57:01,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:57:01,096 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-25 08:57:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:01,096 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:57:01,097 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:57:01,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:57:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:57:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:57:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:57:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:57:01,101 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-25 08:57:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:01,102 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:57:01,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:57:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:57:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:57:01,102 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:01,102 INFO L354 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-25 08:57:01,102 INFO L415 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:01,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353402, now seen corresponding path program 221 times [2018-07-25 08:57:01,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:02,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:02,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:57:02,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:57:02,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:57:02,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:57:02,774 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-25 08:57:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:04,153 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:57:04,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:57:04,153 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-25 08:57:04,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:04,154 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:57:04,154 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:57:04,155 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:57:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:57:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:57:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:57:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:57:04,157 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-25 08:57:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:04,157 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:57:04,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:57:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:57:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:57:04,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:04,158 INFO L354 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-25 08:57:04,158 INFO L415 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384480, now seen corresponding path program 222 times [2018-07-25 08:57:04,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:05,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:05,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:57:05,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:57:05,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:57:05,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:05,668 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-25 08:57:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:06,598 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:57:06,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:57:06,598 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-25 08:57:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:06,599 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:57:06,599 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:57:06,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:57:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:57:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:57:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:57:06,604 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-25 08:57:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:06,604 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:57:06,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:57:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:57:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:57:06,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:06,605 INFO L354 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-25 08:57:06,605 INFO L415 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:06,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151674, now seen corresponding path program 223 times [2018-07-25 08:57:06,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:08,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:08,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:57:08,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:57:08,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:57:08,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:08,133 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-25 08:57:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:09,687 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:57:09,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:57:09,687 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-25 08:57:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:09,687 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:57:09,687 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:57:09,689 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:57:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:57:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:57:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:57:09,691 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-25 08:57:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:09,691 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:57:09,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:57:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:57:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:57:09,692 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:09,692 INFO L354 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-25 08:57:09,692 INFO L415 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:09,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836384, now seen corresponding path program 224 times [2018-07-25 08:57:09,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:11,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:11,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:57:11,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:57:11,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:57:11,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:11,257 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-25 08:57:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:11,679 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:57:11,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:57:11,679 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-25 08:57:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:11,679 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:57:11,679 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:57:11,682 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:57:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:57:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:57:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:57:11,684 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-25 08:57:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:11,684 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:57:11,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:57:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:57:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:57:11,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:11,685 INFO L354 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-25 08:57:11,685 INFO L415 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash -56618106, now seen corresponding path program 225 times [2018-07-25 08:57:11,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:13,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:13,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:57:13,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:57:13,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:57:13,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:13,379 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-25 08:57:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:15,424 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:57:15,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:57:15,424 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-25 08:57:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:15,425 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:57:15,425 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:57:15,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:57:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:57:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:57:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:57:15,429 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-25 08:57:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:15,430 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:57:15,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:57:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:57:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:57:15,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:15,431 INFO L354 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-25 08:57:15,431 INFO L415 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165152, now seen corresponding path program 226 times [2018-07-25 08:57:15,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:17,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:17,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:57:17,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:57:17,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:57:17,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:17,117 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-25 08:57:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:18,280 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:57:18,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:57:18,280 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-25 08:57:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:18,281 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:57:18,281 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:57:18,283 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:57:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:57:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:57:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:57:18,286 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-25 08:57:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:18,286 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:57:18,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:57:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:57:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:57:18,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:18,287 INFO L354 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-25 08:57:18,287 INFO L415 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:18,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451270, now seen corresponding path program 227 times [2018-07-25 08:57:18,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:20,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:20,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:57:20,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:57:20,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:57:20,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:20,019 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-25 08:57:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,672 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:57:21,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:57:21,673 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-25 08:57:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,673 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:57:21,673 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:57:21,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:57:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:57:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:57:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:57:21,679 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-25 08:57:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,679 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:57:21,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:57:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:57:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:57:21,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,680 INFO L354 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-25 08:57:21,680 INFO L415 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312544, now seen corresponding path program 228 times [2018-07-25 08:57:21,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:23,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:23,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:57:23,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:57:23,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:57:23,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:23,471 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-25 08:57:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,994 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:57:23,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:57:23,994 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-25 08:57:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,995 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:57:23,995 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:57:23,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:57:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:57:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:57:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:57:24,001 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-25 08:57:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:24,001 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:57:24,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:57:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:57:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:57:24,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:24,002 INFO L354 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-25 08:57:24,002 INFO L415 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020666, now seen corresponding path program 229 times [2018-07-25 08:57:24,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:25,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:25,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:57:25,762 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:57:25,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:57:25,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:25,768 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-25 08:57:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:27,540 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:57:27,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:57:27,540 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-25 08:57:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:27,540 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:57:27,541 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:57:27,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:57:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:57:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:57:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:57:27,546 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-25 08:57:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:27,546 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:57:27,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:57:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:57:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:57:27,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:27,547 INFO L354 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-25 08:57:27,547 INFO L415 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061152, now seen corresponding path program 230 times [2018-07-25 08:57:27,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:29,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:29,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 08:57:29,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 08:57:29,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 08:57:29,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:29,385 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-25 08:57:30,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:30,518 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:57:30,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:57:30,518 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-25 08:57:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:30,519 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:57:30,519 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:57:30,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:57:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:57:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:57:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:57:30,524 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-25 08:57:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:30,524 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:57:30,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 08:57:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:57:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:57:30,525 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:30,525 INFO L354 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-25 08:57:30,526 INFO L415 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:30,526 INFO L82 PathProgramCache]: Analyzing trace with hash 714251590, now seen corresponding path program 231 times [2018-07-25 08:57:30,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:32,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:32,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:57:32,425 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:57:32,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:57:32,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:57:32,432 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-25 08:57:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:33,270 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:57:33,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:57:33,270 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-25 08:57:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:33,271 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:57:33,271 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:57:33,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:57:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:57:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:57:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:57:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:57:33,276 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-25 08:57:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:33,277 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:57:33,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:57:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:57:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:57:33,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:33,277 INFO L354 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-25 08:57:33,278 INFO L415 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:33,278 INFO L82 PathProgramCache]: Analyzing trace with hash 666958944, now seen corresponding path program 232 times [2018-07-25 08:57:33,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:34,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:34,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-25 08:57:34,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-25 08:57:34,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-25 08:57:34,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:57:34,989 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-25 08:57:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:36,950 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:57:36,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 08:57:36,950 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-25 08:57:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:36,951 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:57:36,951 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:57:36,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:57:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:57:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:57:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:57:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:57:36,955 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-25 08:57:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:36,955 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:57:36,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-25 08:57:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:57:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:57:36,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:36,956 INFO L354 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-25 08:57:36,956 INFO L415 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:36,957 INFO L82 PathProgramCache]: Analyzing trace with hash -799113082, now seen corresponding path program 233 times [2018-07-25 08:57:36,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:38,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:38,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:57:38,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:57:38,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:57:38,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:57:38,786 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-25 08:57:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:40,057 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:57:40,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:57:40,057 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-25 08:57:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:40,058 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:57:40,058 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:57:40,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:57:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:57:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:57:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:57:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:57:40,063 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-25 08:57:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:40,063 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:57:40,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:57:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:57:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:57:40,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:40,064 INFO L354 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-25 08:57:40,064 INFO L415 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 997294368, now seen corresponding path program 234 times [2018-07-25 08:57:40,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:41,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:41,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 08:57:41,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 08:57:41,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 08:57:41,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:57:41,803 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-25 08:57:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:42,943 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:57:42,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 08:57:42,944 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-25 08:57:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:42,944 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:57:42,944 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:57:42,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:57:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:57:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:57:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:57:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:57:42,949 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-25 08:57:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:42,949 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:57:42,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 08:57:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:57:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:57:42,950 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:42,950 INFO L354 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-25 08:57:42,950 INFO L415 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 851350470, now seen corresponding path program 235 times [2018-07-25 08:57:42,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:44,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:44,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:57:44,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:57:44,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:57:44,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:57:44,836 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-25 08:57:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:46,761 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 08:57:46,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:57:46,761 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-25 08:57:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:46,761 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:57:46,761 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:57:46,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:57:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:57:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:57:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:57:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:57:46,767 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-25 08:57:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:46,767 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:57:46,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 08:57:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:57:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:57:46,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:46,768 INFO L354 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-25 08:57:46,768 INFO L415 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 622056928, now seen corresponding path program 236 times [2018-07-25 08:57:46,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:48,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:48,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-25 08:57:48,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-25 08:57:48,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-25 08:57:48,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:57:48,602 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-25 08:57:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:49,875 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:57:49,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-25 08:57:49,876 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-25 08:57:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:49,876 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:57:49,876 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:57:49,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:57:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:57:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:57:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:57:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:57:49,881 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-25 08:57:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:49,881 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:57:49,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-25 08:57:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:57:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:57:49,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:49,882 INFO L354 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-25 08:57:49,882 INFO L415 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:49,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891718, now seen corresponding path program 237 times [2018-07-25 08:57:49,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:51,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:51,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 08:57:51,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 08:57:51,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 08:57:51,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:57:51,751 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-25 08:57:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:52,507 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 08:57:52,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:57:52,507 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-25 08:57:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:52,507 INFO L225 Difference]: With dead ends: 244 [2018-07-25 08:57:52,508 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:57:52,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:57:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:57:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:57:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:57:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:57:52,511 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-25 08:57:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:52,512 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:57:52,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 08:57:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:57:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:57:52,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:52,513 INFO L354 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-25 08:57:52,513 INFO L415 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash 796129952, now seen corresponding path program 238 times [2018-07-25 08:57:52,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:54,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:54,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-25 08:57:54,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-25 08:57:54,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-25 08:57:54,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:57:54,481 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-25 08:57:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:56,568 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:57:56,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 08:57:56,569 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-25 08:57:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:56,569 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:57:56,569 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:57:56,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:57:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:57:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:57:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:57:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:57:56,575 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-25 08:57:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:56,576 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:57:56,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-25 08:57:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:57:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:57:56,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:56,577 INFO L354 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-25 08:57:56,577 INFO L415 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779130, now seen corresponding path program 239 times [2018-07-25 08:57:56,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:58,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:58,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 08:57:58,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 08:57:58,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 08:57:58,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:57:58,515 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-25 08:58:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:00,071 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 08:58:00,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:58:00,072 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-25 08:58:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:00,072 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:58:00,072 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:58:00,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:58:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:58:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:58:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:58:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:58:00,077 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-25 08:58:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:00,077 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:58:00,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 08:58:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:58:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:58:00,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:00,078 INFO L354 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-25 08:58:00,078 INFO L415 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 576581472, now seen corresponding path program 240 times [2018-07-25 08:58:00,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:02,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:02,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-25 08:58:02,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-25 08:58:02,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-25 08:58:02,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:02,026 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-25 08:58:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:02,607 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:58:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-25 08:58:02,607 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-25 08:58:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:02,608 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:58:02,608 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:58:02,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:58:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:58:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:58:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:58:02,611 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-25 08:58:02,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:02,612 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:58:02,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-25 08:58:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:58:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:58:02,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:02,612 INFO L354 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-25 08:58:02,613 INFO L415 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash 694152582, now seen corresponding path program 241 times [2018-07-25 08:58:02,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:04,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:04,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 08:58:04,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 08:58:04,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 08:58:04,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:04,858 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-25 08:58:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:06,846 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 08:58:06,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 08:58:06,846 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-25 08:58:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:06,847 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:58:06,847 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:58:06,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:58:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:58:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:58:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:58:06,854 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-25 08:58:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:06,854 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:58:06,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 08:58:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:58:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:58:06,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:06,855 INFO L354 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-25 08:58:06,855 INFO L415 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:06,855 INFO L82 PathProgramCache]: Analyzing trace with hash 43889696, now seen corresponding path program 242 times [2018-07-25 08:58:06,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:08,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:08,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-25 08:58:08,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-25 08:58:08,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-25 08:58:08,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:58:08,965 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-25 08:58:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:10,517 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:58:10,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 08:58:10,517 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-25 08:58:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:10,518 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:58:10,518 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:58:10,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:58:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:58:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:58:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:58:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:58:10,523 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-25 08:58:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:10,523 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:58:10,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-25 08:58:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:58:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:58:10,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:10,524 INFO L354 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-25 08:58:10,524 INFO L415 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576710, now seen corresponding path program 243 times [2018-07-25 08:58:10,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:12,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:12,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-25 08:58:12,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-25 08:58:12,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-25 08:58:12,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:58:12,560 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-25 08:58:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:14,868 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 08:58:14,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-25 08:58:14,868 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-25 08:58:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:14,869 INFO L225 Difference]: With dead ends: 250 [2018-07-25 08:58:14,869 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:58:14,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:58:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:58:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:58:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:58:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:58:14,874 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-25 08:58:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:14,874 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:58:14,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-25 08:58:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:58:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:58:14,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:14,875 INFO L354 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-25 08:58:14,875 INFO L415 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:14,875 INFO L82 PathProgramCache]: Analyzing trace with hash -771798816, now seen corresponding path program 244 times [2018-07-25 08:58:14,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:16,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:16,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-25 08:58:16,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-25 08:58:16,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-25 08:58:16,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:16,751 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-25 08:58:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:18,676 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:58:18,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-25 08:58:18,676 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-25 08:58:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:18,677 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:58:18,677 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:58:18,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:58:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:58:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:58:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:58:18,682 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-25 08:58:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:18,682 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:58:18,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-25 08:58:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:58:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:58:18,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:18,683 INFO L354 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-25 08:58:18,683 INFO L415 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036614, now seen corresponding path program 245 times [2018-07-25 08:58:18,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:20,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:20,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-25 08:58:20,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-25 08:58:20,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-25 08:58:20,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:20,827 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-25 08:58:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:21,984 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 08:58:21,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-25 08:58:21,984 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-25 08:58:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:21,985 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:58:21,985 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:58:21,986 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:58:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:58:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:58:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:58:21,989 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-25 08:58:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:21,989 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:58:21,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-25 08:58:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:58:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:58:21,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:21,990 INFO L354 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-25 08:58:21,990 INFO L415 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556320, now seen corresponding path program 246 times [2018-07-25 08:58:21,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:24,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-25 08:58:24,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-25 08:58:24,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-25 08:58:24,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:58:24,142 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. Received shutdown request... [2018-07-25 08:58:24,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:58:24,780 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:58:24,785 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:58:24,785 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:58:24 BoogieIcfgContainer [2018-07-25 08:58:24,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:58:24,786 INFO L168 Benchmark]: Toolchain (without parser) took 263180.09 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 370.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:58:24,787 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 08:58:24,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.76 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 08:58:24,788 INFO L168 Benchmark]: Boogie Preprocessor took 20.57 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 08:58:24,788 INFO L168 Benchmark]: RCFGBuilder took 172.86 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 08:58:24,789 INFO L168 Benchmark]: TraceAbstraction took 262936.63 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 1.1 GB in the end (delta: 360.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:58:24,791 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 0.23 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 44.76 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 20.57 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 172.86 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 262936.63 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 1.1 GB in the end (delta: 360.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was constructing difference of abstraction (250states) and interpolant automaton (currently 209 states, 249 states before enhancement), while ReachableStatesComputation was computing reachable states (207 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 262.8s OverallTime, 247 OverallIterations, 246 TraceHistogramMax, 95.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 741 SDtfs, 2 SDslu, 16021 SDs, 0 SdLazy, 46854 SolverSat, 462 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30875 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 30628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=246, 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: 0.7s AutomataMinimizationTime, 246 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 32.8s SatisfiabilityAnalysisTime, 128.3s InterpolantComputationTime, 31122 NumberOfCodeBlocks, 31122 NumberOfCodeBlocksAsserted, 247 NumberOfCheckSat, 30875 ConstructedInterpolants, 0 QuantifiedInterpolants, 15283619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 247 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2511496 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/Luxembourg.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-58-24-800.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-58-24-800.csv Completed graceful shutdown