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/MonadicInvariant01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:33:39,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:33:39,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:33:39,229 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:33:39,230 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:33:39,231 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:33:39,232 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:33:39,234 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:33:39,236 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:33:39,237 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:33:39,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:33:39,238 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:33:39,239 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:33:39,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:33:39,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:33:39,242 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:33:39,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:33:39,245 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:33:39,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:33:39,248 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:33:39,250 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:33:39,251 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:33:39,253 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:33:39,254 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:33:39,254 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:33:39,255 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:33:39,256 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:33:39,257 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:33:39,257 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:33:39,259 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:33:39,259 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:33:39,260 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:33:39,262 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:33:39,276 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:33:39,277 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:33:39,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:33:39,279 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:33:39,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:33:39,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:33:39,279 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:33:39,282 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:33:39,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:33:39,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:33:39,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:33:39,360 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:33:39,360 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:33:39,361 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl [2018-07-25 13:33:39,361 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl' [2018-07-25 13:33:39,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:33:39,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:33:39,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:33:39,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:33:39,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:33:39,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,448 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:33:39,448 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:33:39,448 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:33:39,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:33:39,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:33:39,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:33:39,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:33:39,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:33:39,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:33:39,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:33:39,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:33:39,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/1) ... [2018-07-25 13:33:39,560 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 13:33:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 13:33:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 13:33:39,694 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:33:39,695 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:33:39 BoogieIcfgContainer [2018-07-25 13:33:39,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:33:39,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:33:39,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:33:39,701 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:33:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:33:39" (1/2) ... [2018-07-25 13:33:39,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a94b3f2 and model type MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:33:39, skipping insertion in model container [2018-07-25 13:33:39,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:33:39" (2/2) ... [2018-07-25 13:33:39,707 INFO L112 eAbstractionObserver]: Analyzing ICFG MonadicInvariant01.bpl [2018-07-25 13:33:39,718 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:33:39,728 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:33:39,785 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:33:39,786 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:33:39,786 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:33:39,786 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:33:39,787 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:33:39,787 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:33:39,787 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:33:39,788 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:33:39,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:33:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 13:33:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 13:33:39,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:39,819 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 13:33:39,820 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:39,825 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 13:33:39,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:39,901 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:33:39,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 13:33:39,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:33:39,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:33:39,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:33:39,921 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 13:33:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:39,951 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:33:39,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:33:39,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 13:33:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:39,962 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:33:39,963 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 13:33:39,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:33:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 13:33:40,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 13:33:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 13:33:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 13:33:40,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 13:33:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,005 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 13:33:40,005 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:33:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 13:33:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:33:40,006 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,006 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 13:33:40,007 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 13:33:40,007 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,032 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 13:33:40,035 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:33:40,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:33:40,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:33:40,036 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 13:33:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,070 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:33:40,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:33:40,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 13:33:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,071 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:33:40,074 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:33:40,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:33:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:33:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 13:33:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 13:33:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 13:33:40,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 13:33:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,081 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 13:33:40,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:33:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 13:33:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:33:40,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,083 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 13:33:40,083 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 13:33:40,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:33:40,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:33:40,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:33:40,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:33:40,137 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 13:33:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,157 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:33:40,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:33:40,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 13:33:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,158 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:33:40,158 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:33:40,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:33:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:33:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:33:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:33:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 13:33:40,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 13:33:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,163 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 13:33:40,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:33:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 13:33:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:33:40,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,165 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 13:33:40,165 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,165 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 13:33:40,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:33:40,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:33:40,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:33:40,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:33:40,207 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 13:33:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,234 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:33:40,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:33:40,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 13:33:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,235 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:33:40,235 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:33:40,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:33:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:33:40,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 13:33:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:33:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 13:33:40,241 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 13:33:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,241 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 13:33:40,242 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:33:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 13:33:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:33:40,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,243 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 13:33:40,243 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 13:33:40,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:33:40,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:33:40,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:33:40,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:33:40,292 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 13:33:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,322 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:33:40,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:33:40,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 13:33:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,323 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:33:40,323 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:33:40,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:33:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:33:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 13:33:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 13:33:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 13:33:40,329 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 13:33:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,329 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 13:33:40,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:33:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 13:33:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:33:40,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,331 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 13:33:40,331 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 13:33:40,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:33:40,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:33:40,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:33:40,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:33:40,429 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 13:33:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,486 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:33:40,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:33:40,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 13:33:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,488 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:33:40,488 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:33:40,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:33:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:33:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:33:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:33:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 13:33:40,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 13:33:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,503 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 13:33:40,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:33:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 13:33:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:33:40,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,504 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 13:33:40,504 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 13:33:40,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:33:40,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:33:40,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:33:40,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:33:40,603 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 13:33:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,646 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:33:40,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:33:40,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 13:33:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,647 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:33:40,648 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:33:40,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:33:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:33:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 13:33:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:33:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 13:33:40,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 13:33:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,664 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 13:33:40,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:33:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 13:33:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:33:40,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,668 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 13:33:40,668 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 13:33:40,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:33:40,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:33:40,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:33:40,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:33:40,737 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 13:33:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,776 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 13:33:40,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:33:40,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 13:33:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,779 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:33:40,779 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 13:33:40,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:33:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 13:33:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 13:33:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 13:33:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 13:33:40,788 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 13:33:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,788 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 13:33:40,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:33:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 13:33:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 13:33:40,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,793 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 13:33:40,793 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 13:33:40,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:33:40,865 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:33:40,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:33:40,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:33:40,866 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 13:33:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,886 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 13:33:40,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:33:40,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 13:33:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,887 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:33:40,887 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:33:40,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:33:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:33:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 13:33:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:33:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 13:33:40,893 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 13:33:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,894 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 13:33:40,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:33:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 13:33:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:33:40,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,895 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 13:33:40,895 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 13:33:40,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:40,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:40,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:33:40,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:33:40,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:33:40,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:33:40,967 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 13:33:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,002 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 13:33:41,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:33:41,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 13:33:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,003 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:33:41,003 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 13:33:41,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:33:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 13:33:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 13:33:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 13:33:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 13:33:41,017 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 13:33:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,017 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 13:33:41,018 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:33:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 13:33:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 13:33:41,019 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,020 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 13:33:41,020 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 13:33:41,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:33:41,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:33:41,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:33:41,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:33:41,085 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 13:33:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,116 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 13:33:41,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:33:41,117 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 13:33:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,118 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:33:41,118 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 13:33:41,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:33:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 13:33:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 13:33:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 13:33:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 13:33:41,131 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 13:33:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,132 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 13:33:41,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:33:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 13:33:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:33:41,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,134 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 13:33:41,134 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 13:33:41,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:33:41,203 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:33:41,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:33:41,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:33:41,205 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 13:33:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,236 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 13:33:41,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:33:41,237 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 13:33:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,238 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:33:41,238 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:33:41,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:33:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:33:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 13:33:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 13:33:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 13:33:41,244 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 13:33:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,245 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 13:33:41,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:33:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 13:33:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 13:33:41,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,246 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 13:33:41,247 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 13:33:41,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:33:41,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:33:41,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:33:41,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:33:41,317 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 13:33:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,346 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 13:33:41,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:33:41,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 13:33:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,347 INFO L225 Difference]: With dead ends: 31 [2018-07-25 13:33:41,348 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 13:33:41,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:33:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 13:33:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 13:33:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 13:33:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 13:33:41,358 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 13:33:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,358 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 13:33:41,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:33:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 13:33:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:33:41,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,364 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 13:33:41,364 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 13:33:41,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:33:41,454 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:33:41,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:33:41,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:33:41,455 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 13:33:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,491 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 13:33:41,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:33:41,492 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 13:33:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,493 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:33:41,493 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 13:33:41,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:33:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 13:33:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 13:33:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 13:33:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 13:33:41,505 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 13:33:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,506 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 13:33:41,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:33:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 13:33:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 13:33:41,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,509 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 13:33:41,509 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 13:33:41,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:33:41,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:33:41,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:33:41,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:33:41,590 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 13:33:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,629 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 13:33:41,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:33:41,632 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 13:33:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,632 INFO L225 Difference]: With dead ends: 35 [2018-07-25 13:33:41,633 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:33:41,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:33:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:33:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 13:33:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 13:33:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 13:33:41,642 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 13:33:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,642 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 13:33:41,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:33:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 13:33:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 13:33:41,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,644 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 13:33:41,644 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 13:33:41,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:33:41,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:33:41,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:33:41,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:33:41,754 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 13:33:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,782 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 13:33:41,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:33:41,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 13:33:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,783 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:33:41,783 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 13:33:41,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:33:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 13:33:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 13:33:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 13:33:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 13:33:41,793 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 13:33:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,794 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 13:33:41,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:33:41,795 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 13:33:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 13:33:41,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,796 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 13:33:41,796 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,796 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 13:33:41,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:33:41,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:33:41,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:33:41,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:33:41,888 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 13:33:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:41,928 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 13:33:41,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:33:41,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 13:33:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:41,929 INFO L225 Difference]: With dead ends: 39 [2018-07-25 13:33:41,929 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 13:33:41,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:33:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 13:33:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 13:33:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 13:33:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 13:33:41,937 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 13:33:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:41,938 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 13:33:41,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:33:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 13:33:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 13:33:41,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:41,940 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 13:33:41,940 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 13:33:41,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:33:42,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:33:42,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:33:42,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:33:42,035 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 13:33:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,080 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 13:33:42,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:33:42,080 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 13:33:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,081 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:33:42,081 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:33:42,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:33:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:33:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 13:33:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 13:33:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 13:33:42,093 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 13:33:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,093 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 13:33:42,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:33:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 13:33:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 13:33:42,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,095 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 13:33:42,095 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 13:33:42,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:33:42,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:33:42,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:33:42,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:33:42,214 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 13:33:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,238 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 13:33:42,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:33:42,239 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 13:33:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,239 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:33:42,240 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:33:42,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:33:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:33:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 13:33:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 13:33:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 13:33:42,246 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 13:33:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,246 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 13:33:42,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:33:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 13:33:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 13:33:42,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,247 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 13:33:42,248 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 13:33:42,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:33:42,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:33:42,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:33:42,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:33:42,348 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 13:33:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,375 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 13:33:42,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:33:42,375 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 13:33:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,376 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:33:42,376 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 13:33:42,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:33:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 13:33:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 13:33:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 13:33:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 13:33:42,382 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 13:33:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,383 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 13:33:42,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:33:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 13:33:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 13:33:42,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,384 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 13:33:42,384 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 13:33:42,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:33:42,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:33:42,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:33:42,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:33:42,502 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 13:33:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,532 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 13:33:42,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:33:42,533 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 13:33:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,534 INFO L225 Difference]: With dead ends: 47 [2018-07-25 13:33:42,534 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:33:42,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:33:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:33:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 13:33:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 13:33:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 13:33:42,542 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 13:33:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,546 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 13:33:42,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:33:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 13:33:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 13:33:42,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,548 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 13:33:42,548 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 13:33:42,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:33:42,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:33:42,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:33:42,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:33:42,673 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 13:33:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,699 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 13:33:42,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:33:42,699 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 13:33:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,700 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:33:42,700 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 13:33:42,701 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:33:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 13:33:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 13:33:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 13:33:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 13:33:42,706 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 13:33:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,707 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 13:33:42,707 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:33:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 13:33:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 13:33:42,707 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,708 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 13:33:42,708 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 13:33:42,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:42,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:42,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:33:42,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:33:42,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:33:42,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:33:42,838 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 13:33:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,869 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 13:33:42,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:33:42,870 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 13:33:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,871 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:33:42,871 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 13:33:42,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:33:42,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 13:33:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 13:33:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 13:33:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 13:33:42,882 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 13:33:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,885 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 13:33:42,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:33:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 13:33:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 13:33:42,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,887 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 13:33:42,887 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,887 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 13:33:42,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:43,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:43,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:33:43,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:33:43,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:33:43,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:33:43,020 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 13:33:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,053 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 13:33:43,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:33:43,053 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 13:33:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,054 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:33:43,054 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:33:43,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:33:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:33:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 13:33:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 13:33:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 13:33:43,064 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 13:33:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,064 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 13:33:43,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:33:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 13:33:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 13:33:43,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,065 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 13:33:43,065 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 13:33:43,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:43,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:43,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:33:43,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:33:43,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:33:43,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:33:43,197 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 13:33:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,227 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 13:33:43,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:33:43,227 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 13:33:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,228 INFO L225 Difference]: With dead ends: 55 [2018-07-25 13:33:43,228 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 13:33:43,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:33:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 13:33:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 13:33:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 13:33:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 13:33:43,235 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 13:33:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,235 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 13:33:43,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:33:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 13:33:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 13:33:43,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,236 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 13:33:43,237 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,237 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 13:33:43,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:43,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:43,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:33:43,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:33:43,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:33:43,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:33:43,381 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 13:33:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,416 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 13:33:43,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:33:43,417 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 13:33:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,418 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:33:43,418 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 13:33:43,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:33:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 13:33:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 13:33:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 13:33:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 13:33:43,432 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 13:33:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,433 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 13:33:43,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:33:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 13:33:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 13:33:43,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,434 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 13:33:43,434 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 13:33:43,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:43,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:43,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:33:43,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:33:43,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:33:43,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:33:43,585 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 13:33:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,621 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 13:33:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:33:43,621 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 13:33:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,622 INFO L225 Difference]: With dead ends: 59 [2018-07-25 13:33:43,622 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:33:43,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:33:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:33:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 13:33:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 13:33:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 13:33:43,628 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 13:33:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,628 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 13:33:43,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:33:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 13:33:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 13:33:43,629 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,629 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 13:33:43,630 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 13:33:43,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:43,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:43,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:33:43,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:33:43,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:33:43,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:33:43,839 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 13:33:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:43,879 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 13:33:43,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:33:43,879 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 13:33:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:43,880 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:33:43,880 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 13:33:43,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:33:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 13:33:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 13:33:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 13:33:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 13:33:43,885 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 13:33:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:43,886 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 13:33:43,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:33:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 13:33:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 13:33:43,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:43,887 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 13:33:43,887 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 13:33:43,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:33:44,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:33:44,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:33:44,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:33:44,049 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 13:33:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,083 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 13:33:44,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:33:44,083 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 13:33:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,084 INFO L225 Difference]: With dead ends: 63 [2018-07-25 13:33:44,084 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 13:33:44,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:33:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 13:33:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 13:33:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 13:33:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 13:33:44,092 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 13:33:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,093 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 13:33:44,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:33:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 13:33:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 13:33:44,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,094 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 13:33:44,094 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,094 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 13:33:44,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:33:44,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:33:44,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:33:44,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:33:44,244 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 13:33:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,276 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 13:33:44,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:33:44,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 13:33:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,277 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:33:44,277 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:33:44,278 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:33:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:33:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 13:33:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 13:33:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 13:33:44,282 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 13:33:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,282 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 13:33:44,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:33:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 13:33:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 13:33:44,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,283 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 13:33:44,283 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 13:33:44,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:33:44,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:33:44,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:33:44,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:33:44,433 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 13:33:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,466 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 13:33:44,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:33:44,466 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 13:33:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,467 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:33:44,467 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 13:33:44,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:33:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 13:33:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 13:33:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 13:33:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 13:33:44,473 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 13:33:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,473 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 13:33:44,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:33:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 13:33:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 13:33:44,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,474 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 13:33:44,475 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 13:33:44,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:33:44,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:33:44,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:33:44,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:33:44,631 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 13:33:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,662 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 13:33:44,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:33:44,662 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 13:33:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,663 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:33:44,663 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 13:33:44,664 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:33:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 13:33:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 13:33:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 13:33:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 13:33:44,668 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 13:33:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,669 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 13:33:44,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:33:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 13:33:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 13:33:44,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,672 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 13:33:44,672 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 13:33:44,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:33:44,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:33:44,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:33:44,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:33:44,827 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 13:33:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:44,860 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 13:33:44,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:33:44,860 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 13:33:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:44,861 INFO L225 Difference]: With dead ends: 71 [2018-07-25 13:33:44,861 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:33:44,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:33:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:33:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 13:33:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 13:33:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 13:33:44,866 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 13:33:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:44,866 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 13:33:44,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:33:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 13:33:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 13:33:44,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:44,867 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 13:33:44,867 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 13:33:44,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:45,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:33:45,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:33:45,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:33:45,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:33:45,037 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 13:33:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:45,075 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 13:33:45,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:33:45,075 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 13:33:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:45,076 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:33:45,076 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 13:33:45,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:33:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 13:33:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 13:33:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 13:33:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 13:33:45,082 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 13:33:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:45,082 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 13:33:45,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:33:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 13:33:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 13:33:45,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:45,083 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 13:33:45,083 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 13:33:45,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:45,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:33:45,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:33:45,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:33:45,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:33:45,258 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 13:33:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:45,293 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 13:33:45,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:33:45,293 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 13:33:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:45,294 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:33:45,294 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 13:33:45,295 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:33:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 13:33:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 13:33:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 13:33:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 13:33:45,299 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 13:33:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:45,299 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 13:33:45,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:33:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 13:33:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 13:33:45,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:45,300 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 13:33:45,301 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 13:33:45,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:45,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:33:45,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:33:45,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:33:45,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:33:45,475 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 13:33:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:45,507 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 13:33:45,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:33:45,508 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 13:33:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:45,508 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:33:45,509 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:33:45,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:33:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:33:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 13:33:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 13:33:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 13:33:45,513 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 13:33:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:45,514 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 13:33:45,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:33:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 13:33:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 13:33:45,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:45,515 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 13:33:45,515 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 13:33:45,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:45,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:33:45,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:33:45,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:33:45,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:33:45,691 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 13:33:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:45,728 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 13:33:45,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:33:45,729 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 13:33:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:45,729 INFO L225 Difference]: With dead ends: 79 [2018-07-25 13:33:45,729 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 13:33:45,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:33:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 13:33:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 13:33:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 13:33:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 13:33:45,734 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 13:33:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:45,735 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 13:33:45,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:33:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 13:33:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 13:33:45,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:45,736 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 13:33:45,736 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:45,736 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 13:33:45,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:45,946 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:45,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:33:45,947 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:33:45,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:33:45,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:33:45,948 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 13:33:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:45,986 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 13:33:45,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:33:45,987 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 13:33:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:45,988 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:33:45,988 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 13:33:45,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:33:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 13:33:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 13:33:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 13:33:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 13:33:45,995 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 13:33:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:45,995 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 13:33:45,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:33:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 13:33:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 13:33:45,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:45,997 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 13:33:45,997 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 13:33:45,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:46,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:46,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:33:46,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:33:46,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:33:46,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:33:46,251 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 13:33:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:46,293 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 13:33:46,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:33:46,293 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 13:33:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:46,294 INFO L225 Difference]: With dead ends: 83 [2018-07-25 13:33:46,294 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:33:46,295 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:33:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:33:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 13:33:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 13:33:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 13:33:46,299 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 13:33:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:46,299 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 13:33:46,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:33:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 13:33:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 13:33:46,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:46,300 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 13:33:46,301 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:46,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 13:33:46,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:46,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:46,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:33:46,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:33:46,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:33:46,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:33:46,490 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 13:33:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:46,534 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 13:33:46,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:33:46,534 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 13:33:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:46,535 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:33:46,535 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 13:33:46,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:33:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 13:33:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 13:33:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 13:33:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 13:33:46,541 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 13:33:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:46,541 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 13:33:46,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:33:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 13:33:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 13:33:46,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:46,543 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 13:33:46,543 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:46,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 13:33:46,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:46,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:46,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:33:46,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:33:46,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:33:46,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:33:46,744 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 13:33:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:46,792 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 13:33:46,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:33:46,792 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 13:33:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:46,793 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:33:46,793 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 13:33:46,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:33:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 13:33:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 13:33:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 13:33:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 13:33:46,799 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 13:33:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:46,799 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 13:33:46,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:33:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 13:33:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 13:33:46,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:46,800 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 13:33:46,800 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 13:33:46,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:46,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:46,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:33:46,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:33:46,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:33:46,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:33:46,995 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 13:33:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:47,037 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 13:33:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:33:47,038 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 13:33:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:47,039 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:33:47,039 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:33:47,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:33:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:33:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 13:33:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 13:33:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 13:33:47,045 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 13:33:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:47,046 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 13:33:47,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:33:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 13:33:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 13:33:47,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:47,047 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 13:33:47,047 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:47,047 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 13:33:47,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:47,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:47,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:33:47,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:33:47,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:33:47,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:33:47,257 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 13:33:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:47,313 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 13:33:47,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:33:47,314 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 13:33:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:47,314 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:33:47,315 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 13:33:47,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:33:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 13:33:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 13:33:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 13:33:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 13:33:47,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 13:33:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:47,325 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 13:33:47,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:33:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 13:33:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 13:33:47,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:47,326 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 13:33:47,326 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 13:33:47,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:47,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:47,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:33:47,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:33:47,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:33:47,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:33:47,533 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 13:33:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:47,573 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 13:33:47,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:33:47,573 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 13:33:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:47,574 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:33:47,574 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 13:33:47,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:33:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 13:33:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 13:33:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 13:33:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 13:33:47,581 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 13:33:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:47,581 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 13:33:47,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:33:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 13:33:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 13:33:47,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:47,582 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 13:33:47,583 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 13:33:47,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:47,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:47,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:33:47,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:33:47,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:33:47,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:33:47,798 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 13:33:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:47,846 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 13:33:47,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:33:47,846 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 13:33:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:47,847 INFO L225 Difference]: With dead ends: 95 [2018-07-25 13:33:47,847 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:33:47,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:33:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:33:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 13:33:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 13:33:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 13:33:47,858 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 13:33:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:47,858 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 13:33:47,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:33:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 13:33:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 13:33:47,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:47,859 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 13:33:47,860 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:47,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 13:33:47,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:48,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:48,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:33:48,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:33:48,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:33:48,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:33:48,095 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 13:33:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:48,142 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 13:33:48,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:33:48,142 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 13:33:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:48,143 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:33:48,143 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 13:33:48,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:33:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 13:33:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 13:33:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 13:33:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 13:33:48,149 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 13:33:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:48,149 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 13:33:48,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:33:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 13:33:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 13:33:48,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:48,151 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 13:33:48,151 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 13:33:48,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:48,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:48,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:33:48,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:33:48,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:33:48,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:33:48,411 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 13:33:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:48,455 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 13:33:48,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:33:48,456 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 13:33:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:48,457 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:33:48,457 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 13:33:48,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:33:48,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 13:33:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 13:33:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 13:33:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 13:33:48,463 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 13:33:48,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:48,464 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 13:33:48,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:33:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 13:33:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 13:33:48,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:48,465 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 13:33:48,466 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 13:33:48,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:48,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:48,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:33:48,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:33:48,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:33:48,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:33:48,789 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 13:33:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:48,827 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 13:33:48,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:33:48,827 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 13:33:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:48,828 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:33:48,828 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:33:48,829 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:33:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:33:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 13:33:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 13:33:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 13:33:48,835 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 13:33:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:48,835 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 13:33:48,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:33:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 13:33:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 13:33:48,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:48,837 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 13:33:48,837 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 13:33:48,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:49,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:49,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:33:49,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:33:49,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:33:49,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:33:49,059 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 13:33:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:49,103 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 13:33:49,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:33:49,103 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 13:33:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:49,104 INFO L225 Difference]: With dead ends: 103 [2018-07-25 13:33:49,104 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 13:33:49,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:33:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 13:33:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 13:33:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 13:33:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 13:33:49,110 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 13:33:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:49,111 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 13:33:49,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:33:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 13:33:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 13:33:49,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:49,113 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 13:33:49,113 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 13:33:49,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:49,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:49,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:33:49,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:33:49,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:33:49,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:33:49,335 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 13:33:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:49,388 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 13:33:49,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:33:49,388 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 13:33:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:49,389 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:33:49,389 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 13:33:49,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:33:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 13:33:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 13:33:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 13:33:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 13:33:49,395 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 13:33:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:49,396 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 13:33:49,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:33:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 13:33:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 13:33:49,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:49,397 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 13:33:49,398 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 13:33:49,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:49,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:49,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:33:49,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:33:49,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:33:49,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:33:49,637 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 13:33:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:49,702 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 13:33:49,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:33:49,702 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 13:33:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:49,703 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:33:49,703 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:33:49,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:33:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:33:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 13:33:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 13:33:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 13:33:49,714 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 13:33:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:49,715 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 13:33:49,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:33:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 13:33:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 13:33:49,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:49,716 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 13:33:49,717 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 13:33:49,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:49,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:49,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:33:49,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:33:49,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:33:49,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:33:49,979 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 13:33:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:50,035 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 13:33:50,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:33:50,036 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 13:33:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:50,037 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:33:50,037 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 13:33:50,038 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:33:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 13:33:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 13:33:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 13:33:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 13:33:50,045 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 13:33:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:50,045 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 13:33:50,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:33:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 13:33:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 13:33:50,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:50,047 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 13:33:50,047 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:50,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 13:33:50,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:50,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:50,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:33:50,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:33:50,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:33:50,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:33:50,305 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 13:33:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:50,370 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 13:33:50,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:33:50,370 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 13:33:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:50,371 INFO L225 Difference]: With dead ends: 111 [2018-07-25 13:33:50,371 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 13:33:50,373 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:33:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 13:33:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 13:33:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 13:33:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 13:33:50,381 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 13:33:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:50,381 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 13:33:50,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:33:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 13:33:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 13:33:50,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:50,385 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 13:33:50,385 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:50,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 13:33:50,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:50,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:50,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:33:50,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:33:50,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:33:50,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:33:50,650 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 13:33:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:50,718 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 13:33:50,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:33:50,718 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 13:33:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:50,719 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:33:50,720 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:33:50,721 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:33:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:33:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 13:33:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 13:33:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 13:33:50,726 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 13:33:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:50,727 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 13:33:50,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:33:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 13:33:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 13:33:50,728 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:50,728 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 13:33:50,729 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 13:33:50,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:51,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:51,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:33:51,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:33:51,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:33:51,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:33:51,042 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 13:33:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:51,118 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 13:33:51,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:33:51,119 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 13:33:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:51,120 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:33:51,120 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 13:33:51,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:33:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 13:33:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 13:33:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 13:33:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 13:33:51,128 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 13:33:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:51,129 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 13:33:51,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:33:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 13:33:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 13:33:51,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:51,131 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 13:33:51,131 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:51,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 13:33:51,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:51,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:51,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:33:51,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:33:51,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:33:51,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:33:51,497 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 13:33:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:51,612 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 13:33:51,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:33:51,613 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 13:33:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:51,614 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:33:51,614 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 13:33:51,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:33:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 13:33:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 13:33:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 13:33:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 13:33:51,620 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 13:33:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:51,621 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 13:33:51,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:33:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 13:33:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 13:33:51,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:51,623 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 13:33:51,623 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 13:33:51,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:51,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:51,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:33:51,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:33:51,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:33:51,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:33:51,902 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 13:33:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:51,980 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 13:33:51,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:33:51,980 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 13:33:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:51,981 INFO L225 Difference]: With dead ends: 119 [2018-07-25 13:33:51,982 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:33:51,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:33:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:33:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 13:33:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 13:33:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 13:33:51,989 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 13:33:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:51,989 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 13:33:51,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:33:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 13:33:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 13:33:51,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:51,991 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 13:33:51,991 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 13:33:51,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:52,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:52,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:33:52,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:33:52,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:33:52,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:33:52,286 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 13:33:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:52,357 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 13:33:52,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:33:52,357 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 13:33:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:52,358 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:33:52,359 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 13:33:52,360 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:33:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 13:33:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 13:33:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 13:33:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 13:33:52,366 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 13:33:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:52,366 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 13:33:52,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:33:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 13:33:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 13:33:52,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:52,368 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 13:33:52,368 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 13:33:52,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:52,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:52,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:33:52,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:33:52,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:33:52,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:33:52,676 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 13:33:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:52,760 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 13:33:52,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:33:52,760 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 13:33:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:52,761 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:33:52,761 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 13:33:52,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:33:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 13:33:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 13:33:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 13:33:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 13:33:52,768 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 13:33:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:52,770 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 13:33:52,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:33:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 13:33:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 13:33:52,772 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:52,772 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 13:33:52,772 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:52,773 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 13:33:52,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:53,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:53,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:33:53,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:33:53,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:33:53,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:33:53,087 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 13:33:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:53,141 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 13:33:53,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:33:53,142 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 13:33:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:53,143 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:33:53,143 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:33:53,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:33:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:33:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 13:33:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 13:33:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 13:33:53,149 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 13:33:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:53,150 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 13:33:53,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:33:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 13:33:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 13:33:53,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:53,151 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 13:33:53,152 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:53,152 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 13:33:53,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:53,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:53,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:33:53,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:33:53,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:33:53,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:33:53,442 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 13:33:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:53,517 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 13:33:53,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:33:53,517 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 13:33:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:53,518 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:33:53,519 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 13:33:53,519 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:33:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 13:33:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 13:33:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 13:33:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 13:33:53,525 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 13:33:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:53,525 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 13:33:53,525 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:33:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 13:33:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 13:33:53,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:53,527 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 13:33:53,527 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:53,527 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 13:33:53,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:53,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:53,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:33:53,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:33:53,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:33:53,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:33:53,822 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 13:33:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:53,885 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 13:33:53,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:33:53,885 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 13:33:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:53,886 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:33:53,886 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 13:33:53,887 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:33:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 13:33:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 13:33:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 13:33:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 13:33:53,894 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 13:33:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:53,894 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 13:33:53,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:33:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 13:33:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 13:33:53,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:53,896 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 13:33:53,896 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 13:33:53,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:54,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:54,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:33:54,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:33:54,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:33:54,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:33:54,217 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 13:33:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:54,309 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 13:33:54,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:33:54,309 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 13:33:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:54,310 INFO L225 Difference]: With dead ends: 131 [2018-07-25 13:33:54,310 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:33:54,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:33:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:33:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 13:33:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 13:33:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 13:33:54,317 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 13:33:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:54,317 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 13:33:54,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:33:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 13:33:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 13:33:54,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:54,319 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 13:33:54,319 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 13:33:54,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:54,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:54,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:33:54,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:33:54,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:33:54,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:33:54,601 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 13:33:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:54,659 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 13:33:54,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:33:54,660 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 13:33:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:54,661 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:33:54,661 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 13:33:54,662 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:33:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 13:33:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 13:33:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 13:33:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 13:33:54,668 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 13:33:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:54,668 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 13:33:54,668 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:33:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 13:33:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 13:33:54,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:54,670 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 13:33:54,670 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 13:33:54,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:54,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:54,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:33:54,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:33:54,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:33:54,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:33:54,951 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 13:33:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:55,029 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 13:33:55,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:33:55,029 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 13:33:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:55,030 INFO L225 Difference]: With dead ends: 135 [2018-07-25 13:33:55,030 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 13:33:55,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:33:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 13:33:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 13:33:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 13:33:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 13:33:55,037 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 13:33:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:55,037 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 13:33:55,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:33:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 13:33:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 13:33:55,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:55,039 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 13:33:55,040 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:55,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 13:33:55,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:55,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:55,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:33:55,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:33:55,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:33:55,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:33:55,335 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 13:33:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:55,425 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 13:33:55,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:33:55,425 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 13:33:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:55,426 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:33:55,427 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:33:55,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:33:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:33:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 13:33:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 13:33:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 13:33:55,432 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 13:33:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:55,433 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 13:33:55,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:33:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 13:33:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 13:33:55,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:55,434 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 13:33:55,434 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:55,435 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 13:33:55,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:55,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:55,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:33:55,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:33:55,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:33:55,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:33:55,703 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 13:33:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:55,780 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 13:33:55,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:33:55,780 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 13:33:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:55,781 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:33:55,781 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 13:33:55,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:33:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 13:33:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 13:33:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 13:33:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 13:33:55,789 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 13:33:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:55,789 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 13:33:55,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:33:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 13:33:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 13:33:55,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:55,791 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 13:33:55,791 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 13:33:55,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:56,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:56,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:33:56,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:33:56,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:33:56,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:33:56,105 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 13:33:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:56,180 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 13:33:56,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:33:56,181 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 13:33:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:56,182 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:33:56,182 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 13:33:56,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:33:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 13:33:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 13:33:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 13:33:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 13:33:56,190 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 13:33:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:56,191 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 13:33:56,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:33:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 13:33:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 13:33:56,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:56,193 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 13:33:56,193 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 13:33:56,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:56,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:56,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:33:56,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:33:56,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:33:56,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:33:56,540 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 13:33:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:56,636 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 13:33:56,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:33:56,636 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 13:33:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:56,637 INFO L225 Difference]: With dead ends: 143 [2018-07-25 13:33:56,637 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:33:56,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:33:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:33:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 13:33:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 13:33:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 13:33:56,642 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 13:33:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:56,642 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 13:33:56,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:33:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 13:33:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 13:33:56,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:56,646 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 13:33:56,646 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 13:33:56,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:56,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:56,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:33:56,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:33:56,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:33:56,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:33:56,933 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 13:33:56,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:56,992 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 13:33:56,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:33:56,992 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 13:33:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:56,994 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:33:56,994 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 13:33:56,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:33:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 13:33:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 13:33:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 13:33:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 13:33:56,999 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 13:33:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:56,999 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 13:33:56,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:33:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 13:33:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 13:33:57,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:57,000 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 13:33:57,000 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 13:33:57,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:57,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:57,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:33:57,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:33:57,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:33:57,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:33:57,313 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 13:33:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:57,380 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 13:33:57,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:33:57,380 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 13:33:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:57,381 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:33:57,381 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 13:33:57,382 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:33:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 13:33:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 13:33:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 13:33:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 13:33:57,386 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 13:33:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:57,386 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 13:33:57,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:33:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 13:33:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 13:33:57,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:57,387 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 13:33:57,388 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 13:33:57,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:57,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:57,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:33:57,678 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:33:57,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:33:57,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:33:57,680 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 13:33:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:57,774 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 13:33:57,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:33:57,774 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 13:33:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:57,775 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:33:57,776 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:33:57,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:33:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:33:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 13:33:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 13:33:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 13:33:57,781 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 13:33:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:57,781 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 13:33:57,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:33:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 13:33:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 13:33:57,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:57,783 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 13:33:57,783 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 13:33:57,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:58,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:58,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:33:58,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:33:58,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:33:58,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:33:58,065 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 13:33:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:58,175 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 13:33:58,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:33:58,175 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 13:33:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:58,176 INFO L225 Difference]: With dead ends: 151 [2018-07-25 13:33:58,177 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 13:33:58,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:33:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 13:33:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 13:33:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 13:33:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 13:33:58,182 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 13:33:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:58,182 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 13:33:58,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:33:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 13:33:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 13:33:58,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:58,183 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 13:33:58,184 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 13:33:58,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:58,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:58,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:33:58,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:33:58,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:33:58,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:33:58,516 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 13:33:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:58,593 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 13:33:58,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:33:58,593 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 13:33:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:58,594 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:33:58,594 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 13:33:58,595 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:33:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 13:33:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 13:33:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 13:33:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 13:33:58,599 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 13:33:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:58,599 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 13:33:58,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:33:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 13:33:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 13:33:58,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:58,600 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 13:33:58,601 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:58,601 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 13:33:58,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:58,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:58,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:33:58,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:33:58,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:33:58,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:33:58,922 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 13:33:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:58,977 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 13:33:58,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:33:58,977 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 13:33:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:58,978 INFO L225 Difference]: With dead ends: 155 [2018-07-25 13:33:58,978 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:33:58,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:33:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:33:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 13:33:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 13:33:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 13:33:58,983 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 13:33:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:58,983 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 13:33:58,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:33:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 13:33:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 13:33:58,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:58,985 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 13:33:58,985 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 13:33:58,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:59,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:59,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:33:59,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:33:59,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:33:59,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:33:59,338 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 13:33:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:59,456 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 13:33:59,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:33:59,456 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 13:33:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:59,457 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:33:59,457 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 13:33:59,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:33:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 13:33:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 13:33:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 13:33:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 13:33:59,463 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 13:33:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:59,463 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 13:33:59,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:33:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 13:33:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 13:33:59,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:59,464 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 13:33:59,465 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 13:33:59,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:59,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:59,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:33:59,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:33:59,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:33:59,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:33:59,770 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 13:33:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:59,826 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 13:33:59,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:33:59,826 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 13:33:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:59,828 INFO L225 Difference]: With dead ends: 159 [2018-07-25 13:33:59,828 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 13:33:59,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:33:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 13:33:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 13:33:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 13:33:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 13:33:59,834 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 13:33:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:59,835 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 13:33:59,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:33:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 13:33:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 13:33:59,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:59,836 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 13:33:59,836 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:59,836 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 13:33:59,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:00,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:00,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:34:00,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:34:00,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:34:00,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:34:00,253 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 13:34:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:00,402 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 13:34:00,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:34:00,403 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 13:34:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:00,404 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:34:00,404 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:34:00,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:34:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:34:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 13:34:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 13:34:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 13:34:00,414 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 13:34:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:00,415 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 13:34:00,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:34:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 13:34:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 13:34:00,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:00,416 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 13:34:00,416 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 13:34:00,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:00,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:00,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:34:00,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:34:00,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:34:00,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:34:00,838 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 13:34:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:00,969 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 13:34:00,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:34:00,969 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 13:34:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:00,970 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:34:00,971 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 13:34:00,971 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:34:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 13:34:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 13:34:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 13:34:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 13:34:00,979 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 13:34:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:00,979 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 13:34:00,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:34:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 13:34:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 13:34:00,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:00,980 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 13:34:00,981 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 13:34:00,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:01,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:01,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:34:01,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:34:01,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:34:01,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:34:01,305 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 13:34:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:01,368 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 13:34:01,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:34:01,368 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 13:34:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:01,369 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:34:01,369 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 13:34:01,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:34:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 13:34:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 13:34:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 13:34:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 13:34:01,377 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 13:34:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:01,378 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 13:34:01,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:34:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 13:34:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 13:34:01,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:01,379 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 13:34:01,380 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 13:34:01,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:01,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:01,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:34:01,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:34:01,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:34:01,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:34:01,767 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 13:34:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:01,863 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 13:34:01,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:34:01,863 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 13:34:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:01,864 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:34:01,864 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:34:01,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:34:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:34:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 13:34:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 13:34:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 13:34:01,870 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 13:34:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:01,870 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 13:34:01,870 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:34:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 13:34:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 13:34:01,871 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:01,871 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 13:34:01,872 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 13:34:01,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:02,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:02,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:34:02,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:34:02,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:34:02,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:34:02,161 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 13:34:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:02,268 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 13:34:02,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:34:02,268 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 13:34:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:02,269 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:34:02,269 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 13:34:02,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:34:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 13:34:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 13:34:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 13:34:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 13:34:02,274 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 13:34:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:02,274 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 13:34:02,274 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:34:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 13:34:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 13:34:02,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:02,275 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 13:34:02,276 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:02,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 13:34:02,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:02,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:02,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:34:02,569 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:34:02,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:34:02,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:34:02,570 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 13:34:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:02,690 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 13:34:02,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:34:02,690 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 13:34:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:02,691 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:34:02,692 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 13:34:02,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:34:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 13:34:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 13:34:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 13:34:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 13:34:02,696 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 13:34:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:02,696 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 13:34:02,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:34:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 13:34:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 13:34:02,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:02,697 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 13:34:02,697 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:02,697 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 13:34:02,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:02,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:02,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:34:02,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:34:02,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:34:02,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:34:02,990 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 13:34:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:03,087 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 13:34:03,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:34:03,088 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 13:34:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:03,089 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:34:03,089 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:34:03,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:34:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:34:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 13:34:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 13:34:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 13:34:03,094 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 13:34:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:03,095 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 13:34:03,095 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:34:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 13:34:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 13:34:03,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:03,096 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 13:34:03,096 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 13:34:03,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:03,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:03,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:34:03,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:34:03,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:34:03,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:34:03,419 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 13:34:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:03,536 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 13:34:03,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:34:03,537 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 13:34:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:03,538 INFO L225 Difference]: With dead ends: 175 [2018-07-25 13:34:03,538 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 13:34:03,539 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:34:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 13:34:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 13:34:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 13:34:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 13:34:03,544 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 13:34:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:03,544 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 13:34:03,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:34:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 13:34:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 13:34:03,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:03,546 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 13:34:03,546 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 13:34:03,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:03,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:03,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:34:03,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:34:03,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:34:03,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:34:03,877 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 13:34:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:04,010 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 13:34:04,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:34:04,010 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 13:34:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:04,012 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:34:04,012 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 13:34:04,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:34:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 13:34:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 13:34:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 13:34:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 13:34:04,018 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 13:34:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:04,018 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 13:34:04,018 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:34:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 13:34:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 13:34:04,019 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:04,020 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 13:34:04,020 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 13:34:04,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:04,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:04,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:34:04,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:34:04,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:34:04,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:34:04,312 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 13:34:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:04,370 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 13:34:04,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:34:04,370 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 13:34:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:04,372 INFO L225 Difference]: With dead ends: 179 [2018-07-25 13:34:04,372 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:34:04,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:34:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:34:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 13:34:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 13:34:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 13:34:04,378 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 13:34:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:04,378 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 13:34:04,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:34:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 13:34:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 13:34:04,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:04,379 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 13:34:04,379 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:04,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 13:34:04,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:04,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:04,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:34:04,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:34:04,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:34:04,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:34:04,689 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 13:34:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:04,788 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 13:34:04,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:34:04,788 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 13:34:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:04,790 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:34:04,790 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 13:34:04,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:34:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 13:34:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 13:34:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 13:34:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 13:34:04,795 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 13:34:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:04,795 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 13:34:04,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:34:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 13:34:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 13:34:04,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:04,797 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 13:34:04,797 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 13:34:04,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:05,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:05,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:34:05,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:34:05,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:34:05,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:34:05,102 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 13:34:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:05,219 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 13:34:05,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:34:05,219 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 13:34:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:05,221 INFO L225 Difference]: With dead ends: 183 [2018-07-25 13:34:05,221 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 13:34:05,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:34:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 13:34:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 13:34:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 13:34:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 13:34:05,227 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 13:34:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:05,227 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 13:34:05,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:34:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 13:34:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 13:34:05,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:05,228 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 13:34:05,228 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:05,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 13:34:05,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:05,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:05,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:34:05,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:34:05,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:34:05,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:34:05,538 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 13:34:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:05,617 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 13:34:05,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:34:05,617 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 13:34:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:05,618 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:34:05,618 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:34:05,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:34:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:34:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 13:34:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 13:34:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 13:34:05,625 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 13:34:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:05,626 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 13:34:05,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:34:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 13:34:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 13:34:05,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:05,627 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 13:34:05,627 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:05,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 13:34:05,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:06,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:06,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:34:06,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:34:06,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:34:06,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:34:06,134 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 13:34:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:06,261 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 13:34:06,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:34:06,261 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 13:34:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:06,262 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:34:06,262 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 13:34:06,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:34:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 13:34:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 13:34:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 13:34:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 13:34:06,268 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 13:34:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:06,268 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 13:34:06,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:34:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 13:34:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 13:34:06,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:06,270 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 13:34:06,270 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 13:34:06,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:06,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:06,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:34:06,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:34:06,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:34:06,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:34:06,598 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 13:34:06,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:06,670 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 13:34:06,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:34:06,670 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 13:34:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:06,671 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:34:06,671 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 13:34:06,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:34:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 13:34:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 13:34:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 13:34:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 13:34:06,677 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 13:34:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:06,677 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 13:34:06,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:34:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 13:34:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 13:34:06,678 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:06,679 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 13:34:06,679 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 13:34:06,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:07,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:07,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:34:07,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:34:07,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:34:07,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:34:07,040 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 13:34:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:07,158 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 13:34:07,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:34:07,158 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 13:34:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:07,159 INFO L225 Difference]: With dead ends: 191 [2018-07-25 13:34:07,159 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:34:07,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:34:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:34:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 13:34:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 13:34:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 13:34:07,163 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 13:34:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:07,163 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 13:34:07,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:34:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 13:34:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 13:34:07,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:07,164 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 13:34:07,164 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:07,164 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 13:34:07,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:07,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:07,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:34:07,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:34:07,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:34:07,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:34:07,508 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 13:34:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:07,764 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 13:34:07,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:34:07,764 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 13:34:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:07,766 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:34:07,766 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 13:34:07,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 0 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 13:34:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 13:34:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 13:34:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 13:34:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 13:34:07,773 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 13:34:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:07,773 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 13:34:07,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:34:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 13:34:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 13:34:07,774 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:07,774 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 13:34:07,775 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 13:34:07,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:08,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:08,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:34:08,226 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:34:08,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:34:08,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:34:08,227 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 13:34:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:08,313 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 13:34:08,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:34:08,313 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 13:34:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:08,314 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:34:08,314 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 13:34:08,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:34:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 13:34:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 13:34:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 13:34:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 13:34:08,320 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 13:34:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:08,320 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 13:34:08,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:34:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 13:34:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 13:34:08,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:08,322 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 13:34:08,322 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 13:34:08,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:08,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:08,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:34:08,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:34:08,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:34:08,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:34:08,704 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 13:34:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:08,770 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 13:34:08,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:34:08,770 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 13:34:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:08,771 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:34:08,771 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:34:08,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:34:08,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:34:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 13:34:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 13:34:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 13:34:08,777 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 13:34:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:08,777 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 13:34:08,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:34:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 13:34:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 13:34:08,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:08,779 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 13:34:08,779 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 13:34:08,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:09,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:09,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:34:09,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:34:09,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:34:09,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:34:09,148 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 13:34:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:09,240 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 13:34:09,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:34:09,241 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 13:34:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:09,242 INFO L225 Difference]: With dead ends: 199 [2018-07-25 13:34:09,242 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 13:34:09,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:34:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 13:34:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 13:34:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 13:34:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 13:34:09,248 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 13:34:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:09,249 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 13:34:09,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:34:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 13:34:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 13:34:09,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:09,250 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 13:34:09,250 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 13:34:09,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:09,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:09,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:34:09,814 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:34:09,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:34:09,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:34:09,816 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 13:34:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:09,941 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 13:34:09,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:34:09,941 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 13:34:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:09,942 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:34:09,942 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 13:34:09,943 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:34:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 13:34:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 13:34:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 13:34:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 13:34:09,949 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 13:34:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:09,949 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 13:34:09,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:34:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 13:34:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 13:34:09,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:09,951 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 13:34:09,951 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 13:34:09,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:10,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:10,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:34:10,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:34:10,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:34:10,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:34:10,528 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 13:34:10,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:10,648 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 13:34:10,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:34:10,648 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 13:34:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:10,649 INFO L225 Difference]: With dead ends: 203 [2018-07-25 13:34:10,649 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:34:10,650 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:34:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:34:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 13:34:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 13:34:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 13:34:10,655 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 13:34:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:10,655 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 13:34:10,655 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:34:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 13:34:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 13:34:10,656 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:10,657 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 13:34:10,657 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 13:34:10,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:11,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:11,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:34:11,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:34:11,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:34:11,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:34:11,099 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 13:34:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:11,196 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 13:34:11,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:34:11,196 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 13:34:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:11,197 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:34:11,197 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 13:34:11,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:34:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 13:34:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 13:34:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 13:34:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 13:34:11,204 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 13:34:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:11,204 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 13:34:11,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:34:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 13:34:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 13:34:11,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:11,206 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 13:34:11,206 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 13:34:11,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:11,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:11,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:34:11,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:34:11,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:34:11,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:34:11,722 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 13:34:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:11,855 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 13:34:11,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:34:11,855 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 13:34:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:11,856 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:34:11,856 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 13:34:11,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:34:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 13:34:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 13:34:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 13:34:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 13:34:11,862 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 13:34:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:11,862 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 13:34:11,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:34:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 13:34:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 13:34:11,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:11,864 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 13:34:11,864 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 13:34:11,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:12,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:12,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:34:12,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:34:12,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:34:12,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:34:12,235 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 13:34:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:12,422 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 13:34:12,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:34:12,422 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 13:34:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:12,423 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:34:12,423 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:34:12,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:34:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:34:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 13:34:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 13:34:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 13:34:12,428 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 13:34:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:12,428 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 13:34:12,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:34:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 13:34:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 13:34:12,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:12,429 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 13:34:12,429 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 13:34:12,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:12,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:12,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:34:12,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:34:12,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:34:12,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:34:12,812 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 13:34:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:12,974 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 13:34:12,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:34:12,974 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 13:34:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:12,975 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:34:12,975 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 13:34:12,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:34:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 13:34:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 13:34:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 13:34:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 13:34:12,982 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 13:34:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:12,982 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 13:34:12,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:34:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 13:34:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 13:34:12,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:12,984 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 13:34:12,984 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 13:34:12,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:13,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:13,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:34:13,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:34:13,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:34:13,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:34:13,445 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 13:34:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:13,590 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 13:34:13,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:34:13,590 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 13:34:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:13,590 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:34:13,591 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 13:34:13,591 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:34:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 13:34:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 13:34:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 13:34:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 13:34:13,597 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 13:34:13,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:13,598 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 13:34:13,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:34:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 13:34:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 13:34:13,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:13,599 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 13:34:13,599 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:13,599 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 13:34:13,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:14,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:14,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:34:14,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:34:14,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:34:14,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:34:14,062 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 13:34:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:14,368 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 13:34:14,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:34:14,368 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 13:34:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:14,369 INFO L225 Difference]: With dead ends: 215 [2018-07-25 13:34:14,369 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:34:14,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:34:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:34:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 13:34:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 13:34:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 13:34:14,375 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 13:34:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:14,376 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 13:34:14,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:34:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 13:34:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 13:34:14,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:14,377 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 13:34:14,377 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:14,378 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 13:34:14,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:14,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:14,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:34:14,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:34:14,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:34:14,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:34:14,884 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 13:34:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:15,028 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 13:34:15,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:34:15,028 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 13:34:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:15,029 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:34:15,029 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 13:34:15,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:34:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 13:34:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 13:34:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 13:34:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 13:34:15,035 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 13:34:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:15,035 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 13:34:15,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:34:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 13:34:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 13:34:15,036 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:15,036 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 13:34:15,036 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 13:34:15,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:15,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:15,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:34:15,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:34:15,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:34:15,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:34:15,465 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 13:34:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:15,557 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 13:34:15,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:34:15,557 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 13:34:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:15,558 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:34:15,558 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 13:34:15,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:34:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 13:34:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 13:34:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 13:34:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 13:34:15,562 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 13:34:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:15,563 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 13:34:15,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:34:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 13:34:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 13:34:15,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:15,564 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 13:34:15,564 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:15,564 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 13:34:15,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:16,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:16,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:34:16,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:34:16,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:34:16,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:34:16,118 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 13:34:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:16,319 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 13:34:16,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:34:16,319 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 13:34:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:16,319 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:34:16,320 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:34:16,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:34:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:34:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 13:34:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 13:34:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 13:34:16,326 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 13:34:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:16,326 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 13:34:16,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:34:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 13:34:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 13:34:16,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:16,327 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 13:34:16,327 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 13:34:16,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:16,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:16,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:34:16,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:34:16,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:34:16,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:34:16,824 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 13:34:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:17,039 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 13:34:17,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:34:17,039 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 13:34:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:17,040 INFO L225 Difference]: With dead ends: 223 [2018-07-25 13:34:17,040 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 13:34:17,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:34:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 13:34:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 13:34:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 13:34:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 13:34:17,047 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 13:34:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:17,048 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 13:34:17,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:34:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 13:34:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 13:34:17,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:17,050 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 13:34:17,050 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 13:34:17,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:17,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:17,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:34:17,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:34:17,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:34:17,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:34:17,583 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 13:34:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:17,732 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 13:34:17,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:34:17,732 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 13:34:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:17,733 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:34:17,733 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 13:34:17,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:34:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 13:34:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 13:34:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 13:34:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 13:34:17,739 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 13:34:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:17,739 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 13:34:17,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:34:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 13:34:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 13:34:17,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:17,741 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 13:34:17,741 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:17,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 13:34:17,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:18,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:18,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:34:18,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:34:18,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:34:18,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:34:18,210 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 13:34:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:18,376 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 13:34:18,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:34:18,377 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 13:34:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:18,377 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:34:18,377 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:34:18,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:34:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:34:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 13:34:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 13:34:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 13:34:18,382 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 13:34:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:18,383 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 13:34:18,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:34:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 13:34:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 13:34:18,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:18,384 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 13:34:18,384 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 13:34:18,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:18,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:18,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:34:18,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:34:18,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:34:18,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:34:18,860 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 13:34:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:19,035 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 13:34:19,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:34:19,035 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 13:34:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:19,036 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:34:19,036 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 13:34:19,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:34:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 13:34:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 13:34:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 13:34:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 13:34:19,040 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 13:34:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:19,040 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 13:34:19,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:34:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 13:34:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 13:34:19,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:19,041 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 13:34:19,041 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 13:34:19,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:19,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:19,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:34:19,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:34:19,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:34:19,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:34:19,546 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 13:34:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:19,731 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 13:34:19,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:34:19,731 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 13:34:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:19,732 INFO L225 Difference]: With dead ends: 231 [2018-07-25 13:34:19,732 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 13:34:19,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:34:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 13:34:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 13:34:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 13:34:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 13:34:19,738 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 13:34:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:19,738 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 13:34:19,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:34:19,739 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 13:34:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 13:34:19,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:19,740 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 13:34:19,740 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:19,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 13:34:19,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:20,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:20,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:34:20,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:34:20,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:34:20,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:34:20,302 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 13:34:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:20,481 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 13:34:20,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:34:20,482 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 13:34:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:20,482 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:34:20,482 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:34:20,483 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:34:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:34:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 13:34:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 13:34:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 13:34:20,488 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 13:34:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:20,488 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 13:34:20,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:34:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 13:34:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 13:34:20,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:20,490 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 13:34:20,490 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 13:34:20,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:21,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:21,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:34:21,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:34:21,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:34:21,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:34:21,039 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 13:34:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:21,273 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 13:34:21,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:34:21,274 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 13:34:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:21,274 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:34:21,274 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 13:34:21,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:34:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 13:34:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 13:34:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 13:34:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 13:34:21,278 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 13:34:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:21,279 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 13:34:21,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:34:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 13:34:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 13:34:21,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:21,280 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 13:34:21,280 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 13:34:21,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:21,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:21,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:34:21,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:34:21,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:34:21,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:34:21,930 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 13:34:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:22,203 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 13:34:22,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:34:22,203 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 13:34:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:22,204 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:34:22,204 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 13:34:22,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:34:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 13:34:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 13:34:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 13:34:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 13:34:22,208 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 13:34:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:22,209 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 13:34:22,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:34:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 13:34:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 13:34:22,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:22,210 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 13:34:22,210 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:22,210 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 13:34:22,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:22,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:22,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:34:22,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:34:22,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:34:22,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:34:22,758 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 13:34:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:22,879 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 13:34:22,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:34:22,879 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 13:34:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:22,880 INFO L225 Difference]: With dead ends: 239 [2018-07-25 13:34:22,880 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:34:22,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:34:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:34:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 13:34:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 13:34:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 13:34:22,884 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 13:34:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:22,884 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 13:34:22,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:34:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 13:34:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 13:34:22,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:22,885 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 13:34:22,886 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 13:34:22,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:23,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:23,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:34:23,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:34:23,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:34:23,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:34:23,602 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 13:34:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:23,791 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 13:34:23,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:34:23,792 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 13:34:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:23,792 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:34:23,792 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 13:34:23,793 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:34:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 13:34:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 13:34:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 13:34:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 13:34:23,798 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 13:34:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:23,798 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 13:34:23,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:34:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 13:34:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 13:34:23,799 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:23,800 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 13:34:23,800 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 13:34:23,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:24,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:24,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:34:24,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:34:24,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:34:24,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:34:24,381 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 13:34:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:24,674 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 13:34:24,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:34:24,674 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 13:34:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:24,675 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:34:24,675 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 13:34:24,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:34:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 13:34:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 13:34:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 13:34:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 13:34:24,679 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 13:34:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:24,679 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 13:34:24,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:34:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 13:34:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 13:34:24,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:24,680 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 13:34:24,681 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:24,681 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 13:34:24,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:25,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:25,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:34:25,348 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:34:25,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:34:25,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:34:25,350 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 13:34:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:25,596 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 13:34:25,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:34:25,597 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 13:34:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:25,597 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:34:25,597 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:34:25,598 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:34:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:34:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 13:34:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 13:34:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 13:34:25,602 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 13:34:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:25,603 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 13:34:25,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:34:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 13:34:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 13:34:25,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:25,604 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 13:34:25,604 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 13:34:25,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:26,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:26,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:34:26,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:34:26,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:34:26,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:34:26,214 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 13:34:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:26,350 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 13:34:26,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:34:26,350 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 13:34:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:26,351 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:34:26,351 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 13:34:26,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:34:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 13:34:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 13:34:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 13:34:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 13:34:26,356 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 13:34:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:26,356 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 13:34:26,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:34:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 13:34:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 13:34:26,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:26,357 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 13:34:26,357 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 13:34:26,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:26,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:26,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:34:26,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:34:26,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:34:26,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:34:26,997 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 13:34:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:27,341 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 13:34:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:34:27,342 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 13:34:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:27,342 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:34:27,342 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 13:34:27,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:34:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 13:34:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 13:34:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 13:34:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 13:34:27,348 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 13:34:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:27,348 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 13:34:27,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:34:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 13:34:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 13:34:27,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:27,349 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 13:34:27,350 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:27,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 13:34:27,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:27,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:27,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:34:27,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:34:27,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:34:27,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:34:27,937 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 13:34:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:28,204 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 13:34:28,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:34:28,204 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 13:34:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:28,205 INFO L225 Difference]: With dead ends: 251 [2018-07-25 13:34:28,205 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:34:28,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:34:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:34:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 13:34:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 13:34:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 13:34:28,211 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 13:34:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:28,212 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 13:34:28,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:34:28,212 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 13:34:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 13:34:28,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:28,213 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 13:34:28,213 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:28,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 13:34:28,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:28,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:28,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:34:28,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:34:28,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:34:28,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:34:28,852 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 13:34:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:28,987 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 13:34:28,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:34:28,987 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 13:34:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:28,988 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:34:28,988 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 13:34:28,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:34:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 13:34:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 13:34:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 13:34:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 13:34:28,992 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 13:34:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:28,993 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 13:34:28,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:34:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 13:34:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 13:34:28,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:28,993 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 13:34:28,994 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 13:34:28,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:29,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:29,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:34:29,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:34:29,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:34:29,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:34:29,612 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 13:34:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:29,889 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 13:34:29,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:34:29,889 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 13:34:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:29,889 INFO L225 Difference]: With dead ends: 255 [2018-07-25 13:34:29,890 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 13:34:29,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:34:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 13:34:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 13:34:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 13:34:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 13:34:29,895 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 13:34:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:29,895 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 13:34:29,895 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:34:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 13:34:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 13:34:29,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:29,897 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 13:34:29,897 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 13:34:29,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:30,577 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:30,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:34:30,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:34:30,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:34:30,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:34:30,580 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 13:34:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:30,729 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 13:34:30,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:34:30,729 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 13:34:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:30,730 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:34:30,730 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:34:30,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:34:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:34:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 13:34:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 13:34:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 13:34:30,739 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 13:34:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:30,740 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 13:34:30,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:34:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 13:34:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 13:34:30,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:30,742 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 13:34:30,742 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:30,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 13:34:30,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:31,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:31,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:34:31,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:34:31,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:34:31,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:34:31,566 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 13:34:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:31,875 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 13:34:31,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:34:31,876 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 13:34:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:31,876 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:34:31,876 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 13:34:31,877 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:34:31,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 13:34:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 13:34:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 13:34:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 13:34:31,881 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 13:34:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:31,881 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 13:34:31,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:34:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 13:34:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 13:34:31,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:31,883 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 13:34:31,883 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:31,883 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 13:34:31,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:32,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:32,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:34:32,775 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:34:32,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:34:32,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:34:32,779 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 13:34:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:32,916 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 13:34:32,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:34:32,916 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 13:34:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:32,917 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:34:32,917 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 13:34:32,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:34:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 13:34:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 13:34:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 13:34:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 13:34:32,923 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 13:34:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:32,924 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 13:34:32,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:34:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 13:34:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 13:34:32,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:32,925 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 13:34:32,925 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:32,925 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 13:34:32,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:33,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:33,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:34:33,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 13:34:33,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 13:34:33,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:34:33,591 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 13:34:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:33,900 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 13:34:33,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:34:33,901 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 13:34:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:33,901 INFO L225 Difference]: With dead ends: 263 [2018-07-25 13:34:33,901 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:34:33,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:34:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:34:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 13:34:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 13:34:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 13:34:33,906 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 13:34:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:33,907 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 13:34:33,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 13:34:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 13:34:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 13:34:33,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:33,907 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 13:34:33,908 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:33,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 13:34:33,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:34,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:34,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 13:34:34,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:34:34,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:34:34,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:34:34,579 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 13:34:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:34,915 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 13:34:34,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:34:34,916 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 13:34:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:34,916 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:34:34,916 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 13:34:34,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:34:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 13:34:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 13:34:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 13:34:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 13:34:34,921 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 13:34:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:34,921 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 13:34:34,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:34:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 13:34:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 13:34:34,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:34,922 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 13:34:34,923 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:34,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 13:34:34,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:35,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:35,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:34:35,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:34:35,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:34:35,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:34:35,612 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 13:34:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:35,882 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 13:34:35,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:34:35,882 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 13:34:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:35,883 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:34:35,883 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 13:34:35,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:34:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 13:34:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 13:34:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 13:34:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 13:34:35,888 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 13:34:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:35,888 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 13:34:35,888 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:34:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 13:34:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 13:34:35,889 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:35,889 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 13:34:35,889 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 13:34:35,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:36,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:36,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:34:36,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:34:36,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:34:36,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:34:36,577 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 13:34:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:36,923 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 13:34:36,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:34:36,923 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 13:34:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:36,924 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:34:36,924 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:34:36,925 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:34:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:34:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 13:34:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 13:34:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 13:34:36,929 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 13:34:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:36,929 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 13:34:36,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:34:36,929 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 13:34:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 13:34:36,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:36,930 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 13:34:36,930 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:36,930 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 13:34:36,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:37,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:37,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:34:37,678 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 13:34:37,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 13:34:37,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:34:37,681 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 13:34:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:38,111 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 13:34:38,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:34:38,111 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 13:34:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:38,112 INFO L225 Difference]: With dead ends: 271 [2018-07-25 13:34:38,112 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 13:34:38,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:34:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 13:34:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 13:34:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 13:34:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 13:34:38,116 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 13:34:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:38,117 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 13:34:38,117 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 13:34:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 13:34:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 13:34:38,117 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:38,118 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 13:34:38,118 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:38,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 13:34:38,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:38,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:38,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 13:34:38,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:34:38,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:34:38,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:34:38,925 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 13:34:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:39,084 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 13:34:39,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:34:39,084 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 13:34:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:39,085 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:34:39,085 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 13:34:39,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:34:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 13:34:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 13:34:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 13:34:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 13:34:39,089 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 13:34:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:39,089 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 13:34:39,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:34:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 13:34:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 13:34:39,090 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:39,090 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 13:34:39,090 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 13:34:39,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:39,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:39,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:34:39,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:34:39,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:34:39,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:34:39,866 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 13:34:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:40,263 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 13:34:40,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:34:40,264 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 13:34:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:40,264 INFO L225 Difference]: With dead ends: 275 [2018-07-25 13:34:40,264 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:34:40,266 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:34:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:34:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 13:34:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 13:34:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 13:34:40,272 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 13:34:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:40,272 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 13:34:40,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:34:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 13:34:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 13:34:40,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:40,274 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 13:34:40,274 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 13:34:40,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:41,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:41,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:34:41,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:34:41,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:34:41,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:34:41,186 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 13:34:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:41,603 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 13:34:41,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:34:41,603 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 13:34:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:41,604 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:34:41,604 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 13:34:41,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:34:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 13:34:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 13:34:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 13:34:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 13:34:41,609 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 13:34:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:41,609 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 13:34:41,609 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:34:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 13:34:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 13:34:41,610 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:41,610 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-07-25 13:34:41,610 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 13:34:41,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:42,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:42,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:34:42,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 13:34:42,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 13:34:42,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:34:42,395 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 13:34:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:42,823 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 13:34:42,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:34:42,823 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 13:34:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:42,824 INFO L225 Difference]: With dead ends: 279 [2018-07-25 13:34:42,824 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 13:34:42,825 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:34:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 13:34:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 13:34:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 13:34:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 13:34:42,829 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 13:34:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:42,829 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 13:34:42,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 13:34:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 13:34:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 13:34:42,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:42,830 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 13:34:42,830 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 13:34:42,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:43,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:43,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 13:34:43,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:34:43,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:34:43,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:34:43,630 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 13:34:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:44,126 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 13:34:44,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:34:44,127 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 13:34:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:44,127 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:34:44,127 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:34:44,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:34:44,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:34:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 13:34:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 13:34:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 13:34:44,132 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 13:34:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:44,132 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 13:34:44,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:34:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 13:34:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 13:34:44,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:44,133 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 13:34:44,133 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:44,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 13:34:44,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:44,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:44,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:34:44,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:34:44,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:34:44,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:34:44,874 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 13:34:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:45,399 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 13:34:45,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:34:45,399 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 13:34:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:45,400 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:34:45,400 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 13:34:45,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:34:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 13:34:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 13:34:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 13:34:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 13:34:45,404 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 13:34:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:45,404 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 13:34:45,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:34:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 13:34:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 13:34:45,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:45,405 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 13:34:45,406 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 13:34:45,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:46,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:46,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:34:46,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:34:46,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:34:46,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:34:46,194 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 13:34:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:46,726 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 13:34:46,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:34:46,726 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 13:34:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:46,726 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:34:46,727 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 13:34:46,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:34:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 13:34:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 13:34:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 13:34:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 13:34:46,731 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 13:34:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:46,731 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 13:34:46,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:34:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 13:34:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 13:34:46,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:46,732 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 13:34:46,732 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 13:34:46,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:47,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:47,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:34:47,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 13:34:47,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 13:34:47,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:34:47,557 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 13:34:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:48,072 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 13:34:48,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:34:48,072 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 13:34:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:48,073 INFO L225 Difference]: With dead ends: 287 [2018-07-25 13:34:48,073 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:34:48,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:34:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:34:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 13:34:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 13:34:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 13:34:48,079 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 13:34:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:48,080 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 13:34:48,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 13:34:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 13:34:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 13:34:48,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:48,081 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 13:34:48,081 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 13:34:48,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:48,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:48,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 13:34:48,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:34:48,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:34:48,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:34:48,884 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 13:34:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:49,452 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 13:34:49,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:34:49,452 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 13:34:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:49,453 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:34:49,453 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 13:34:49,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:34:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 13:34:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 13:34:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 13:34:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 13:34:49,457 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 13:34:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:49,457 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 13:34:49,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:34:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 13:34:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 13:34:49,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:49,458 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 13:34:49,459 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 13:34:49,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:50,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:50,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:34:50,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:34:50,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:34:50,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:34:50,337 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 13:34:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:50,912 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 13:34:50,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:34:50,912 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 13:34:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:50,913 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:34:50,913 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 13:34:50,914 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:34:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 13:34:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 13:34:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 13:34:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 13:34:50,917 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 13:34:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:50,918 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 13:34:50,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:34:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 13:34:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 13:34:50,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:50,919 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 13:34:50,919 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 13:34:50,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:51,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:51,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:34:51,754 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:34:51,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:34:51,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:34:51,757 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 13:34:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:52,285 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 13:34:52,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:34:52,285 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 13:34:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:52,286 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:34:52,286 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:34:52,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:34:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:34:52,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 13:34:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 13:34:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 13:34:52,291 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 13:34:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:52,291 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 13:34:52,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:34:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 13:34:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 13:34:52,292 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:52,292 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 13:34:52,292 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 13:34:52,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:53,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:53,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:34:53,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 13:34:53,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 13:34:53,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:34:53,112 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 13:34:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:53,643 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 13:34:53,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:34:53,643 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 13:34:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:53,644 INFO L225 Difference]: With dead ends: 295 [2018-07-25 13:34:53,644 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 13:34:53,645 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:34:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 13:34:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 13:34:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 13:34:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 13:34:53,648 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 13:34:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:53,648 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 13:34:53,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 13:34:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 13:34:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 13:34:53,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:53,649 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 13:34:53,650 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 13:34:53,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:54,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:54,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 13:34:54,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:34:54,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:34:54,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:34:54,443 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 13:34:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:54,874 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 13:34:54,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:34:54,874 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 13:34:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:54,875 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:34:54,875 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 13:34:54,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:34:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 13:34:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 13:34:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 13:34:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 13:34:54,880 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 13:34:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:54,880 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 13:34:54,880 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:34:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 13:34:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 13:34:54,881 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:54,881 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 13:34:54,881 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 13:34:54,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:55,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:55,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:34:55,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:34:55,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:34:55,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:34:55,769 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 13:34:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:56,009 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 13:34:56,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:34:56,009 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 13:34:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:56,010 INFO L225 Difference]: With dead ends: 299 [2018-07-25 13:34:56,010 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:34:56,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:34:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:34:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 13:34:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 13:34:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 13:34:56,018 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 13:34:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:56,019 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 13:34:56,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:34:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 13:34:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 13:34:56,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:56,020 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 13:34:56,021 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:56,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 13:34:56,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:56,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:56,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:34:56,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:34:56,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:34:56,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:34:56,989 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 13:34:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:57,730 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 13:34:57,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:34:57,730 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 13:34:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:57,731 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:34:57,731 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 13:34:57,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:34:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 13:34:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 13:34:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 13:34:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 13:34:57,735 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 13:34:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:57,736 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 13:34:57,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:34:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 13:34:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 13:34:57,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:57,737 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 13:34:57,737 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 13:34:57,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:34:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:34:58,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:34:58,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:34:58,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 13:34:58,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 13:34:58,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:34:58,600 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 13:34:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:34:59,204 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 13:34:59,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:34:59,204 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 13:34:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:34:59,205 INFO L225 Difference]: With dead ends: 303 [2018-07-25 13:34:59,205 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 13:34:59,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:34:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 13:34:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 13:34:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 13:34:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 13:34:59,210 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 13:34:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:34:59,210 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 13:34:59,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 13:34:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 13:34:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 13:34:59,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:34:59,211 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 13:34:59,211 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:34:59,212 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 13:34:59,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:34:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:00,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:00,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 13:35:00,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:35:00,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:35:00,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:35:00,144 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 13:35:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:00,452 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 13:35:00,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:35:00,452 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 13:35:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:00,453 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:35:00,453 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:35:00,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:35:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:35:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 13:35:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 13:35:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 13:35:00,457 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 13:35:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:00,458 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 13:35:00,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:35:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 13:35:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 13:35:00,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:00,459 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 13:35:00,459 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:00,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 13:35:00,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:01,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:01,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:35:01,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:35:01,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:35:01,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:35:01,339 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 13:35:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:01,948 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 13:35:01,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:35:01,949 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 13:35:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:01,949 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:35:01,949 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 13:35:01,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:35:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 13:35:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 13:35:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 13:35:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 13:35:01,954 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 13:35:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:01,954 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 13:35:01,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:35:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 13:35:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 13:35:01,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:01,955 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 13:35:01,955 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 13:35:01,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:02,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:02,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:35:02,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:35:02,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:35:02,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:35:02,828 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 13:35:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:03,457 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 13:35:03,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:35:03,457 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 13:35:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:03,459 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:35:03,459 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 13:35:03,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:35:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 13:35:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 13:35:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 13:35:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 13:35:03,468 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 13:35:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:03,468 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 13:35:03,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:35:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 13:35:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 13:35:03,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:03,470 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 13:35:03,470 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 13:35:03,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:04,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:04,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:35:04,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 13:35:04,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 13:35:04,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:35:04,550 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 13:35:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:04,832 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 13:35:04,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:35:04,832 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 13:35:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:04,833 INFO L225 Difference]: With dead ends: 311 [2018-07-25 13:35:04,833 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:35:04,834 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:35:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:35:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 13:35:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 13:35:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 13:35:04,838 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 13:35:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:04,839 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 13:35:04,839 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 13:35:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 13:35:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 13:35:04,839 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:04,840 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 13:35:04,840 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:04,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 13:35:04,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:05,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:05,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 13:35:05,777 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:35:05,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:35:05,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:35:05,779 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 13:35:06,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:06,495 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 13:35:06,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:35:06,495 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 13:35:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:06,496 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:35:06,496 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 13:35:06,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:35:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 13:35:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 13:35:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 13:35:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 13:35:06,501 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 13:35:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:06,501 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 13:35:06,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:35:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 13:35:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 13:35:06,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:06,502 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 13:35:06,502 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 13:35:06,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:07,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:07,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:35:07,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:35:07,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:35:07,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:35:07,421 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 13:35:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:07,679 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 13:35:07,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:35:07,679 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 13:35:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:07,679 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:35:07,679 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 13:35:07,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:35:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 13:35:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 13:35:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 13:35:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 13:35:07,685 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 13:35:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:07,685 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 13:35:07,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:35:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 13:35:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 13:35:07,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:07,686 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 13:35:07,686 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 13:35:07,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:08,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:08,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:35:08,757 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:35:08,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:35:08,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:35:08,759 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 13:35:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:09,466 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 13:35:09,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:35:09,466 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 13:35:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:09,466 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:35:09,466 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:35:09,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:35:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:35:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 13:35:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 13:35:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 13:35:09,473 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 13:35:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:09,473 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 13:35:09,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:35:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 13:35:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 13:35:09,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:09,475 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 13:35:09,475 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 13:35:09,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:10,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:10,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:35:10,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 13:35:10,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 13:35:10,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:35:10,567 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 13:35:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:10,954 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 13:35:10,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:35:10,954 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 13:35:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:10,955 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:35:10,955 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 13:35:10,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:35:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 13:35:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 13:35:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 13:35:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 13:35:10,960 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 13:35:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:10,960 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 13:35:10,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 13:35:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 13:35:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 13:35:10,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:10,961 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 13:35:10,961 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 13:35:10,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:12,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:12,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 13:35:12,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:35:12,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:35:12,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:35:12,014 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 13:35:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:12,820 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 13:35:12,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:35:12,820 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 13:35:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:12,821 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:35:12,821 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 13:35:12,822 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:35:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 13:35:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 13:35:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 13:35:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 13:35:12,826 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 13:35:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:12,826 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 13:35:12,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:35:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 13:35:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 13:35:12,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:12,827 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 13:35:12,828 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 13:35:12,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:13,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:13,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:35:13,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:35:13,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:35:13,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:35:13,922 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 13:35:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:14,804 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 13:35:14,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:35:14,805 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 13:35:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:14,805 INFO L225 Difference]: With dead ends: 323 [2018-07-25 13:35:14,805 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:35:14,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:35:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:35:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 13:35:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 13:35:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 13:35:14,810 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 13:35:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:14,811 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 13:35:14,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:35:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 13:35:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 13:35:14,812 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:14,812 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 13:35:14,812 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:14,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 13:35:14,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:15,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:15,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:35:15,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:35:15,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:35:15,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:35:15,838 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 13:35:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:16,123 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 13:35:16,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:35:16,123 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 13:35:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:16,124 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:35:16,124 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 13:35:16,125 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:35:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 13:35:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 13:35:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 13:35:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 13:35:16,129 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 13:35:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:16,129 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 13:35:16,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:35:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 13:35:16,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 13:35:16,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:16,130 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 13:35:16,130 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:16,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 13:35:16,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:17,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:17,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:35:17,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 13:35:17,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 13:35:17,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:35:17,202 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 13:35:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:18,077 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 13:35:18,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:35:18,078 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 13:35:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:18,078 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:35:18,078 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 13:35:18,080 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:35:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 13:35:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 13:35:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 13:35:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 13:35:18,084 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 13:35:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:18,084 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 13:35:18,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 13:35:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 13:35:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 13:35:18,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:18,086 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 13:35:18,086 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 13:35:18,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:19,160 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:19,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 13:35:19,161 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:35:19,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:35:19,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:35:19,164 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 13:35:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:20,172 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 13:35:20,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:35:20,173 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 13:35:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:20,173 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:35:20,173 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:35:20,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:35:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:35:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 13:35:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 13:35:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 13:35:20,179 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 13:35:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:20,179 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 13:35:20,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:35:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 13:35:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 13:35:20,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:20,180 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 13:35:20,180 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 13:35:20,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:21,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:21,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:35:21,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:35:21,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:35:21,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:35:21,306 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 13:35:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:22,080 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 13:35:22,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:35:22,080 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 13:35:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:22,081 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:35:22,081 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 13:35:22,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:35:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 13:35:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 13:35:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 13:35:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 13:35:22,087 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 13:35:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:22,087 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 13:35:22,087 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:35:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 13:35:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 13:35:22,088 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:22,088 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 13:35:22,088 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 13:35:22,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:23,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:23,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:35:23,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:35:23,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:35:23,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:35:23,253 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 13:35:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:23,602 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 13:35:23,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:35:23,602 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 13:35:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:23,603 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:35:23,603 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 13:35:23,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:35:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 13:35:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 13:35:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 13:35:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 13:35:23,609 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 13:35:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:23,610 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 13:35:23,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:35:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 13:35:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 13:35:23,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:23,612 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 13:35:23,612 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:23,612 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 13:35:23,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:24,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:24,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:35:24,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 13:35:24,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 13:35:24,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:35:24,842 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 13:35:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:25,303 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 13:35:25,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:35:25,303 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 13:35:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:25,304 INFO L225 Difference]: With dead ends: 335 [2018-07-25 13:35:25,304 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:35:25,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:35:25,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:35:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 13:35:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 13:35:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 13:35:25,309 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 13:35:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:25,310 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 13:35:25,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 13:35:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 13:35:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 13:35:25,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:25,311 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 13:35:25,311 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:25,311 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 13:35:25,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:26,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:26,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 13:35:26,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:35:26,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:35:26,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:35:26,484 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 13:35:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:27,315 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 13:35:27,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:35:27,316 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 13:35:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:27,316 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:35:27,316 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 13:35:27,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:35:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 13:35:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 13:35:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 13:35:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 13:35:27,321 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 13:35:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:27,321 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 13:35:27,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:35:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 13:35:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 13:35:27,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:27,322 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 13:35:27,322 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:27,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 13:35:27,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:28,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:28,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:35:28,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:35:28,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:35:28,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:35:28,465 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 13:35:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:29,468 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 13:35:29,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:35:29,468 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 13:35:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:29,469 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:35:29,469 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 13:35:29,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:35:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 13:35:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 13:35:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 13:35:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 13:35:29,475 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 13:35:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:29,475 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 13:35:29,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:35:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 13:35:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 13:35:29,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:29,476 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 13:35:29,476 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 13:35:29,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:30,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:30,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:35:30,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:35:30,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:35:30,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:35:30,669 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 13:35:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:31,669 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 13:35:31,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:35:31,669 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 13:35:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:31,670 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:35:31,670 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:35:31,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:35:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:35:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 13:35:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 13:35:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 13:35:31,675 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 13:35:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:31,675 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 13:35:31,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:35:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 13:35:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 13:35:31,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:31,676 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 13:35:31,677 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:31,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 13:35:31,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:32,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:32,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:35:32,892 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 13:35:32,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 13:35:32,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:35:32,895 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 13:35:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:33,902 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 13:35:33,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:35:33,902 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 13:35:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:33,903 INFO L225 Difference]: With dead ends: 343 [2018-07-25 13:35:33,903 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 13:35:33,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:35:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 13:35:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 13:35:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 13:35:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 13:35:33,909 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 13:35:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:33,909 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 13:35:33,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 13:35:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 13:35:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 13:35:33,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:33,910 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 13:35:33,910 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:33,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 13:35:33,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:35,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:35,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 13:35:35,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:35:35,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:35:35,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:35:35,114 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 13:35:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:36,189 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 13:35:36,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:35:36,189 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 13:35:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:36,190 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:35:36,190 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 13:35:36,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:35:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 13:35:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 13:35:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 13:35:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 13:35:36,196 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 13:35:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:36,196 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 13:35:36,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:35:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 13:35:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 13:35:36,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:36,197 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 13:35:36,197 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 13:35:36,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:37,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:37,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:35:37,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:35:37,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:35:37,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:35:37,473 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 13:35:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:38,480 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 13:35:38,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:35:38,480 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 13:35:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:38,480 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:35:38,481 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:35:38,481 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:35:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:35:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 13:35:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 13:35:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 13:35:38,485 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 13:35:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:38,486 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 13:35:38,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:35:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 13:35:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 13:35:38,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:38,487 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 13:35:38,487 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:38,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 13:35:38,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:39,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:39,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:35:39,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:35:39,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:35:39,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:35:39,685 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 13:35:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:40,438 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 13:35:40,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:35:40,438 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 13:35:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:40,439 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:35:40,439 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 13:35:40,440 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:35:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 13:35:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 13:35:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 13:35:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 13:35:40,447 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 13:35:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:40,447 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 13:35:40,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:35:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 13:35:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 13:35:40,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:40,449 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 13:35:40,449 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 13:35:40,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:41,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:41,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:35:41,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 13:35:41,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 13:35:41,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:35:41,780 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 13:35:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:42,194 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 13:35:42,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:35:42,194 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 13:35:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:42,195 INFO L225 Difference]: With dead ends: 351 [2018-07-25 13:35:42,195 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 13:35:42,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:35:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 13:35:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 13:35:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 13:35:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 13:35:42,201 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 13:35:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:42,201 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 13:35:42,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 13:35:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 13:35:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 13:35:42,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:42,202 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 13:35:42,202 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:42,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 13:35:42,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:43,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:43,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 13:35:43,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:35:43,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:35:43,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:35:43,457 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 13:35:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:43,981 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 13:35:43,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:35:43,981 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 13:35:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:43,981 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:35:43,982 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:35:43,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:35:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:35:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 13:35:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 13:35:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 13:35:43,989 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 13:35:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:43,989 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 13:35:43,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:35:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 13:35:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 13:35:43,991 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:43,991 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 13:35:43,991 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 13:35:43,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:45,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:45,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:35:45,264 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:35:45,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:35:45,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:35:45,268 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 13:35:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:46,344 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 13:35:46,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:35:46,344 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 13:35:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:46,345 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:35:46,345 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 13:35:46,346 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:35:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 13:35:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 13:35:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 13:35:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 13:35:46,350 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 13:35:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:46,350 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 13:35:46,351 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:35:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 13:35:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 13:35:46,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:46,352 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 13:35:46,352 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:46,352 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 13:35:46,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:47,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:47,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:35:47,602 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:35:47,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:35:47,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:35:47,607 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 13:35:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:48,953 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 13:35:48,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:35:48,953 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 13:35:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:48,954 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:35:48,954 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 13:35:48,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:35:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 13:35:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 13:35:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 13:35:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 13:35:48,960 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 13:35:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:48,960 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 13:35:48,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:35:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 13:35:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 13:35:48,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:48,961 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 13:35:48,961 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:48,961 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 13:35:48,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:50,223 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:50,223 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:35:50,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 13:35:50,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 13:35:50,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:35:50,227 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 13:35:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:51,092 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 13:35:51,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:35:51,092 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 13:35:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:51,093 INFO L225 Difference]: With dead ends: 359 [2018-07-25 13:35:51,093 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:35:51,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:35:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:35:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 13:35:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 13:35:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 13:35:51,098 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 13:35:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:51,099 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 13:35:51,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 13:35:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 13:35:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 13:35:51,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:51,100 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 13:35:51,100 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 13:35:51,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:52,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:52,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 13:35:52,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:35:52,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:35:52,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:35:52,345 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 13:35:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:52,843 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 13:35:52,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:35:52,843 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 13:35:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:52,844 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:35:52,844 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 13:35:52,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:35:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 13:35:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 13:35:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 13:35:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 13:35:52,851 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 13:35:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:52,852 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 13:35:52,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:35:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 13:35:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 13:35:52,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:52,853 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 13:35:52,853 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:52,853 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 13:35:52,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:54,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:54,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:35:54,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:35:54,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:35:54,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:35:54,146 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 13:35:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:55,570 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 13:35:55,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:35:55,571 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 13:35:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:55,571 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:35:55,571 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 13:35:55,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:35:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 13:35:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 13:35:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 13:35:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 13:35:55,578 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 13:35:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:55,578 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 13:35:55,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:35:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 13:35:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 13:35:55,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:55,579 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 13:35:55,579 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 13:35:55,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:56,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:56,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:35:56,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:35:56,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:35:56,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:35:56,875 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 13:35:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:57,672 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 13:35:57,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:35:57,672 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 13:35:57,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:57,673 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:35:57,673 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:35:57,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:35:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:35:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 13:35:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 13:35:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 13:35:57,678 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 13:35:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:57,679 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 13:35:57,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:35:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 13:35:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 13:35:57,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:57,680 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 13:35:57,680 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 13:35:57,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:35:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:35:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:35:58,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:35:58,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:35:58,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 13:35:58,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 13:35:58,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:35:58,987 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 13:35:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:35:59,887 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 13:35:59,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:35:59,888 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 13:35:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:35:59,888 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:35:59,888 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 13:35:59,890 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:35:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 13:35:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 13:35:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 13:35:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 13:35:59,894 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 13:35:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:35:59,894 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 13:35:59,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 13:35:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 13:35:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 13:35:59,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:35:59,895 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 13:35:59,895 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:35:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 13:35:59,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:01,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:01,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 13:36:01,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:36:01,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:36:01,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:36:01,185 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 13:36:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:02,501 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 13:36:02,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:36:02,501 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 13:36:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:02,502 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:36:02,502 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 13:36:02,504 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:36:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 13:36:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 13:36:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 13:36:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 13:36:02,508 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 13:36:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:02,508 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 13:36:02,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:36:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 13:36:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 13:36:02,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:02,509 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 13:36:02,509 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 13:36:02,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:03,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:03,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:36:03,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:36:03,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:36:03,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:36:03,849 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 13:36:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:04,511 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 13:36:04,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:36:04,512 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 13:36:04,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:04,512 INFO L225 Difference]: With dead ends: 371 [2018-07-25 13:36:04,512 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 13:36:04,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:36:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 13:36:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 13:36:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 13:36:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 13:36:04,518 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 13:36:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:04,519 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 13:36:04,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:36:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 13:36:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 13:36:04,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:04,520 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 13:36:04,520 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 13:36:04,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:05,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:05,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:36:05,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:36:05,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:36:05,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:36:05,885 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 13:36:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:07,289 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 13:36:07,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:36:07,289 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 13:36:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:07,289 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:36:07,289 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 13:36:07,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:36:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 13:36:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 13:36:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 13:36:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 13:36:07,295 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 13:36:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:07,295 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 13:36:07,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:36:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 13:36:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 13:36:07,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:07,297 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 13:36:07,297 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 13:36:07,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:08,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:08,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:36:08,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 13:36:08,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 13:36:08,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:36:08,669 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 13:36:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:09,560 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 13:36:09,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:36:09,561 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 13:36:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:09,561 INFO L225 Difference]: With dead ends: 375 [2018-07-25 13:36:09,561 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 13:36:09,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:36:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 13:36:09,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 13:36:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 13:36:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 13:36:09,568 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 13:36:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:09,568 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 13:36:09,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 13:36:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 13:36:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 13:36:09,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:09,569 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 13:36:09,569 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 13:36:09,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:10,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:10,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 13:36:10,938 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:36:10,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:36:10,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:36:10,942 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 13:36:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:11,892 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 13:36:11,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:36:11,892 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 13:36:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:11,893 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:36:11,893 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 13:36:11,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:36:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 13:36:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 13:36:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 13:36:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 13:36:11,898 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 13:36:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:11,899 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 13:36:11,899 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:36:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 13:36:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 13:36:11,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:11,900 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 13:36:11,900 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 13:36:11,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:13,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:13,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:36:13,312 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:36:13,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:36:13,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:36:13,316 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 13:36:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:14,887 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 13:36:14,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:36:14,887 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 13:36:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:14,888 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:36:14,888 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 13:36:14,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:36:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 13:36:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 13:36:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 13:36:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 13:36:14,892 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 13:36:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:14,893 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 13:36:14,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:36:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 13:36:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 13:36:14,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:14,894 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 13:36:14,894 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:14,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 13:36:14,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:16,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:16,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:36:16,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:36:16,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:36:16,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:36:16,327 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 13:36:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:16,802 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 13:36:16,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:36:16,802 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 13:36:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:16,803 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:36:16,803 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 13:36:16,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:36:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 13:36:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 13:36:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 13:36:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 13:36:16,809 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 13:36:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:16,809 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 13:36:16,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:36:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 13:36:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 13:36:16,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:16,811 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 13:36:16,811 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 13:36:16,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:18,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:18,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:36:18,344 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 13:36:18,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 13:36:18,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:36:18,346 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 13:36:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:19,422 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 13:36:19,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:36:19,422 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 13:36:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:19,423 INFO L225 Difference]: With dead ends: 383 [2018-07-25 13:36:19,423 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 13:36:19,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:36:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 13:36:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 13:36:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 13:36:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 13:36:19,428 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 13:36:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:19,428 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 13:36:19,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 13:36:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 13:36:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 13:36:19,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:19,429 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 13:36:19,430 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 13:36:19,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:20,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:20,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 13:36:20,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:36:20,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:36:20,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:36:20,893 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 13:36:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:22,682 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 13:36:22,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:36:22,682 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 13:36:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:22,683 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:36:22,683 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 13:36:22,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:36:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 13:36:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 13:36:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 13:36:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 13:36:22,691 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 13:36:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:22,691 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 13:36:22,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:36:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 13:36:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 13:36:22,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:22,693 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 13:36:22,693 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:22,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 13:36:22,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:24,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:24,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:36:24,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:36:24,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:36:24,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:36:24,210 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 13:36:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:25,257 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 13:36:25,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:36:25,257 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 13:36:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:25,257 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:36:25,258 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 13:36:25,258 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:36:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 13:36:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 13:36:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 13:36:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 13:36:25,263 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 13:36:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:25,263 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 13:36:25,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:36:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 13:36:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 13:36:25,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:25,265 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 13:36:25,265 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:25,265 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 13:36:25,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:26,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:26,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:36:26,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:36:26,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:36:26,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:36:26,720 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 13:36:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:27,211 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 13:36:27,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:36:27,211 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 13:36:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:27,212 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:36:27,212 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 13:36:27,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:36:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 13:36:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 13:36:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 13:36:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 13:36:27,218 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 13:36:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:27,219 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 13:36:27,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:36:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 13:36:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 13:36:27,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:27,221 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 13:36:27,221 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 13:36:27,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:28,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:28,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:36:28,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 13:36:28,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 13:36:28,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:36:28,699 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 13:36:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:29,489 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 13:36:29,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:36:29,489 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 13:36:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:29,490 INFO L225 Difference]: With dead ends: 391 [2018-07-25 13:36:29,490 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 13:36:29,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:36:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 13:36:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 13:36:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 13:36:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 13:36:29,496 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 13:36:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:29,496 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 13:36:29,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 13:36:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 13:36:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 13:36:29,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:29,498 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 13:36:29,498 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 13:36:29,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:31,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:31,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 13:36:31,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:36:31,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:36:31,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:36:31,005 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 13:36:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:32,370 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 13:36:32,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:36:32,371 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 13:36:32,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:32,371 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:36:32,371 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 13:36:32,373 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:36:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 13:36:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 13:36:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 13:36:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 13:36:32,377 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 13:36:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:32,378 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 13:36:32,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:36:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 13:36:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 13:36:32,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:32,379 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 13:36:32,379 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 13:36:32,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:33,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:33,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:36:33,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:36:33,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:36:33,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:36:33,883 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 13:36:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:35,670 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 13:36:35,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:36:35,670 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 13:36:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:35,671 INFO L225 Difference]: With dead ends: 395 [2018-07-25 13:36:35,671 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 13:36:35,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:36:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 13:36:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 13:36:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 13:36:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 13:36:35,677 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 13:36:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:35,677 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 13:36:35,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:36:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 13:36:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 13:36:35,678 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:35,678 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 13:36:35,678 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 13:36:35,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:37,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:37,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:36:37,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:36:37,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:36:37,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:36:37,315 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 13:36:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:39,123 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 13:36:39,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:36:39,123 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 13:36:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:39,124 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:36:39,124 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 13:36:39,125 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:36:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 13:36:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 13:36:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 13:36:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 13:36:39,129 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 13:36:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:39,129 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 13:36:39,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:36:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 13:36:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 13:36:39,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:39,130 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 13:36:39,131 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 13:36:39,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:40,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:40,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:36:40,768 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 13:36:40,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 13:36:40,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:36:40,772 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 13:36:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:42,796 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 13:36:42,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:36:42,796 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 13:36:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:42,796 INFO L225 Difference]: With dead ends: 399 [2018-07-25 13:36:42,796 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 13:36:42,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:36:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 13:36:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 13:36:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 13:36:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 13:36:42,803 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 13:36:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:42,803 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 13:36:42,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 13:36:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 13:36:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 13:36:42,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:42,804 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 13:36:42,804 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 13:36:42,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:44,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:44,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 13:36:44,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:36:44,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:36:44,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:36:44,408 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 13:36:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:46,413 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 13:36:46,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:36:46,413 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 13:36:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:46,414 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:36:46,414 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 13:36:46,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:36:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 13:36:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 13:36:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 13:36:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 13:36:46,419 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 13:36:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:46,420 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 13:36:46,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:36:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 13:36:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 13:36:46,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:46,421 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 13:36:46,421 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 13:36:46,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:48,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:48,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:36:48,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:36:48,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:36:48,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:36:48,019 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 13:36:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:50,071 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 13:36:50,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:36:50,071 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 13:36:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:50,072 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:36:50,072 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 13:36:50,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:36:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 13:36:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 13:36:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 13:36:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 13:36:50,078 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 13:36:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:50,078 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 13:36:50,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:36:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 13:36:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 13:36:50,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:50,080 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 13:36:50,080 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 13:36:50,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:51,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:51,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:36:51,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:36:51,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:36:51,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:36:51,711 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 13:36:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:53,690 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 13:36:53,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:36:53,690 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 13:36:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:53,691 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:36:53,691 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 13:36:53,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:36:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 13:36:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 13:36:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 13:36:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 13:36:53,698 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 13:36:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:53,698 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 13:36:53,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:36:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 13:36:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 13:36:53,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:53,700 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 13:36:53,700 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 13:36:53,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:55,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:55,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:36:55,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 13:36:55,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 13:36:55,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:36:55,478 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 13:36:57,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:57,150 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 13:36:57,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:36:57,150 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 13:36:57,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:57,151 INFO L225 Difference]: With dead ends: 407 [2018-07-25 13:36:57,151 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 13:36:57,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:36:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 13:36:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 13:36:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 13:36:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 13:36:57,157 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 13:36:57,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:57,157 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 13:36:57,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 13:36:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 13:36:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 13:36:57,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:57,158 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 13:36:57,158 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 13:36:57,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:36:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:36:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:36:59,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:36:59,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 13:36:59,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:36:59,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:36:59,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:36:59,019 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 13:36:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:36:59,839 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 13:36:59,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:36:59,839 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 13:36:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:36:59,840 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:36:59,840 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 13:36:59,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:36:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 13:36:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 13:36:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 13:36:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 13:36:59,848 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 13:36:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:36:59,849 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 13:36:59,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:36:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 13:36:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 13:36:59,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:36:59,850 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 13:36:59,851 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:36:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 13:36:59,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:01,797 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:01,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:37:01,798 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:37:01,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:37:01,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:37:01,803 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 13:37:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:03,017 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 13:37:03,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:37:03,017 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 13:37:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:03,018 INFO L225 Difference]: With dead ends: 411 [2018-07-25 13:37:03,018 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 13:37:03,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:37:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 13:37:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 13:37:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 13:37:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 13:37:03,026 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 13:37:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:03,026 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 13:37:03,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:37:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 13:37:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 13:37:03,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:03,028 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 13:37:03,028 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:03,028 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 13:37:03,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:04,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:04,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:37:04,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:37:04,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:37:04,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:37:04,947 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 13:37:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:06,922 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 13:37:06,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:37:06,922 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 13:37:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:06,923 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:37:06,923 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 13:37:06,925 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:37:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 13:37:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 13:37:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 13:37:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 13:37:06,931 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 13:37:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:06,931 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 13:37:06,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:37:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 13:37:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 13:37:06,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:06,933 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 13:37:06,933 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:06,933 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 13:37:06,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:08,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:08,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:37:08,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 13:37:08,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 13:37:08,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:37:08,734 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 13:37:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:10,898 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 13:37:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:37:10,898 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 13:37:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:10,898 INFO L225 Difference]: With dead ends: 415 [2018-07-25 13:37:10,898 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 13:37:10,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:37:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 13:37:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 13:37:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 13:37:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 13:37:10,905 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 13:37:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:10,905 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 13:37:10,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 13:37:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 13:37:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 13:37:10,906 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:10,906 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 13:37:10,907 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 13:37:10,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:12,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:12,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 13:37:12,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:37:12,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:37:12,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:37:12,675 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 13:37:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:14,024 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 13:37:14,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:37:14,024 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 13:37:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:14,025 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:37:14,025 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 13:37:14,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:37:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 13:37:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 13:37:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 13:37:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 13:37:14,032 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 13:37:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:14,032 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 13:37:14,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:37:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 13:37:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 13:37:14,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:14,034 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 13:37:14,034 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 13:37:14,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:15,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:15,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:37:15,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:37:15,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:37:15,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:37:15,814 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 13:37:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:16,889 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 13:37:16,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:37:16,889 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 13:37:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:16,890 INFO L225 Difference]: With dead ends: 419 [2018-07-25 13:37:16,890 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 13:37:16,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:37:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 13:37:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 13:37:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 13:37:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 13:37:16,896 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 13:37:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:16,897 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 13:37:16,897 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:37:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 13:37:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 13:37:16,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:16,898 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 13:37:16,898 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 13:37:16,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:18,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:18,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:37:18,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:37:18,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:37:18,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:37:18,715 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 13:37:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:21,076 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 13:37:21,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:37:21,076 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 13:37:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:21,077 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:37:21,077 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 13:37:21,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:37:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 13:37:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 13:37:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 13:37:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 13:37:21,084 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 13:37:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:21,084 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 13:37:21,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:37:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 13:37:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 13:37:21,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:21,086 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 13:37:21,086 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:21,086 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 13:37:21,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:22,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:22,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:37:22,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 13:37:22,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 13:37:22,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:37:22,927 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 13:37:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:24,118 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 13:37:24,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:37:24,118 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 13:37:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:24,119 INFO L225 Difference]: With dead ends: 423 [2018-07-25 13:37:24,119 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 13:37:24,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:37:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 13:37:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 13:37:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 13:37:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 13:37:24,124 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 13:37:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:24,125 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 13:37:24,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 13:37:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 13:37:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 13:37:24,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:24,126 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 13:37:24,126 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 13:37:24,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:26,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:26,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 13:37:26,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:37:26,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:37:26,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:37:26,052 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 13:37:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:28,151 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 13:37:28,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:37:28,151 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 13:37:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:28,151 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:37:28,152 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 13:37:28,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:37:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 13:37:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 13:37:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 13:37:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 13:37:28,159 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 13:37:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:28,159 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 13:37:28,159 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:37:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 13:37:28,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 13:37:28,160 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:28,160 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 13:37:28,160 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 13:37:28,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:30,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:30,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:37:30,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:37:30,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:37:30,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:37:30,097 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 13:37:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:31,260 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 13:37:31,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:37:31,260 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 13:37:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:31,261 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:37:31,261 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 13:37:31,263 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:37:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 13:37:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 13:37:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 13:37:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 13:37:31,268 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 13:37:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:31,269 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 13:37:31,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:37:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 13:37:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 13:37:31,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:31,270 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 13:37:31,270 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 13:37:31,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:33,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:33,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:37:33,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:37:33,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:37:33,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:37:33,245 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 13:37:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:35,144 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 13:37:35,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:37:35,144 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 13:37:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:35,145 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:37:35,145 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 13:37:35,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:37:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 13:37:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 13:37:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 13:37:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 13:37:35,151 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 13:37:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:35,151 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 13:37:35,151 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:37:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 13:37:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 13:37:35,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:35,152 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 13:37:35,152 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 13:37:35,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:37,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:37,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:37:37,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 13:37:37,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 13:37:37,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:37:37,169 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 13:37:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:38,884 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 13:37:38,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:37:38,884 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 13:37:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:38,885 INFO L225 Difference]: With dead ends: 431 [2018-07-25 13:37:38,885 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 13:37:38,887 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:37:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 13:37:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 13:37:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 13:37:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 13:37:38,892 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 13:37:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:38,892 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 13:37:38,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 13:37:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 13:37:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 13:37:38,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:38,893 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 13:37:38,894 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:38,894 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 13:37:38,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:40,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:40,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 13:37:40,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:37:40,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:37:40,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:37:40,836 INFO L87 Difference]: Start difference. First operand 430 states and 430 transitions. Second operand 216 states. [2018-07-25 13:37:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:43,334 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 13:37:43,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:37:43,334 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 429 [2018-07-25 13:37:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:43,335 INFO L225 Difference]: With dead ends: 433 [2018-07-25 13:37:43,335 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 13:37:43,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:37:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 13:37:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-07-25 13:37:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-07-25 13:37:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-07-25 13:37:43,341 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 429 [2018-07-25 13:37:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:43,342 INFO L472 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-07-25 13:37:43,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:37:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-07-25 13:37:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-25 13:37:43,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:43,343 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1] [2018-07-25 13:37:43,343 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1779562636, now seen corresponding path program 214 times [2018-07-25 13:37:43,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:45,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:45,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:37:45,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 13:37:45,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 13:37:45,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:37:45,323 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 217 states. [2018-07-25 13:37:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:45,996 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 13:37:45,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:37:45,996 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 431 [2018-07-25 13:37:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:45,996 INFO L225 Difference]: With dead ends: 435 [2018-07-25 13:37:45,997 INFO L226 Difference]: Without dead ends: 434 [2018-07-25 13:37:45,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:37:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-25 13:37:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-25 13:37:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-25 13:37:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2018-07-25 13:37:46,003 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 431 [2018-07-25 13:37:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:46,004 INFO L472 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2018-07-25 13:37:46,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 13:37:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2018-07-25 13:37:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-25 13:37:46,006 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:46,006 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1] [2018-07-25 13:37:46,006 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:46,006 INFO L82 PathProgramCache]: Analyzing trace with hash 762710478, now seen corresponding path program 215 times [2018-07-25 13:37:46,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:48,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:48,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 13:37:48,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 13:37:48,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 13:37:48,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:37:48,013 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand 218 states. [2018-07-25 13:37:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:50,433 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 13:37:50,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 13:37:50,433 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 433 [2018-07-25 13:37:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:50,434 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:37:50,434 INFO L226 Difference]: Without dead ends: 436 [2018-07-25 13:37:50,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:37:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-07-25 13:37:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2018-07-25 13:37:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-07-25 13:37:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 436 transitions. [2018-07-25 13:37:50,440 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 436 transitions. Word has length 433 [2018-07-25 13:37:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:50,440 INFO L472 AbstractCegarLoop]: Abstraction has 436 states and 436 transitions. [2018-07-25 13:37:50,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 13:37:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 436 transitions. [2018-07-25 13:37:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-07-25 13:37:50,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:50,442 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1] [2018-07-25 13:37:50,442 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:50,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1474637168, now seen corresponding path program 216 times [2018-07-25 13:37:50,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:52,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:52,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 13:37:52,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 13:37:52,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 13:37:52,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:37:52,556 INFO L87 Difference]: Start difference. First operand 436 states and 436 transitions. Second operand 219 states. [2018-07-25 13:37:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:54,851 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 13:37:54,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 13:37:54,852 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 435 [2018-07-25 13:37:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:54,853 INFO L225 Difference]: With dead ends: 439 [2018-07-25 13:37:54,853 INFO L226 Difference]: Without dead ends: 438 [2018-07-25 13:37:54,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:37:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2018-07-25 13:37:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2018-07-25 13:37:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-07-25 13:37:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 438 transitions. [2018-07-25 13:37:54,861 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 438 transitions. Word has length 435 [2018-07-25 13:37:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:54,861 INFO L472 AbstractCegarLoop]: Abstraction has 438 states and 438 transitions. [2018-07-25 13:37:54,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 13:37:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 438 transitions. [2018-07-25 13:37:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-07-25 13:37:54,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:54,862 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1] [2018-07-25 13:37:54,863 INFO L415 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:54,863 INFO L82 PathProgramCache]: Analyzing trace with hash 212890322, now seen corresponding path program 217 times [2018-07-25 13:37:54,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:37:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:37:56,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:37:56,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 13:37:56,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 13:37:56,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 13:37:56,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:37:56,925 INFO L87 Difference]: Start difference. First operand 438 states and 438 transitions. Second operand 220 states. [2018-07-25 13:37:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:37:58,376 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 13:37:58,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 13:37:58,376 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 437 [2018-07-25 13:37:58,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:37:58,377 INFO L225 Difference]: With dead ends: 441 [2018-07-25 13:37:58,377 INFO L226 Difference]: Without dead ends: 440 [2018-07-25 13:37:58,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:37:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-07-25 13:37:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2018-07-25 13:37:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-07-25 13:37:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 440 transitions. [2018-07-25 13:37:58,383 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 440 transitions. Word has length 437 [2018-07-25 13:37:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:37:58,384 INFO L472 AbstractCegarLoop]: Abstraction has 440 states and 440 transitions. [2018-07-25 13:37:58,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 13:37:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 440 transitions. [2018-07-25 13:37:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-25 13:37:58,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:37:58,385 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1] [2018-07-25 13:37:58,385 INFO L415 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:37:58,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1570829676, now seen corresponding path program 218 times [2018-07-25 13:37:58,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:37:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:38:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:38:00,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:38:00,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 13:38:00,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 13:38:00,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 13:38:00,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:38:00,467 INFO L87 Difference]: Start difference. First operand 440 states and 440 transitions. Second operand 221 states. Received shutdown request... [2018-07-25 13:38:02,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:38:02,294 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:38:02,299 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:38:02,299 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:38:02 BoogieIcfgContainer [2018-07-25 13:38:02,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:38:02,300 INFO L168 Benchmark]: Toolchain (without parser) took 262891.47 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -976.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-25 13:38:02,301 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:38:02,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:38:02,302 INFO L168 Benchmark]: Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:38:02,302 INFO L168 Benchmark]: RCFGBuilder took 221.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:38:02,302 INFO L168 Benchmark]: TraceAbstraction took 262602.49 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -987.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-25 13:38:02,304 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 0.21 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 40.90 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 22.30 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 221.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262602.49 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -987.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was constructing difference of abstraction (440states) and interpolant automaton (currently 210 states, 221 states before enhancement), while ReachableStatesComputation was computing reachable states (415 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 262.5s OverallTime, 219 OverallIterations, 219 TraceHistogramMax, 103.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 438 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 59821 SolverSat, 445 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24090 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=440occurred in iteration=218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 218 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 17.1s SatisfiabilityAnalysisTime, 124.6s InterpolantComputationTime, 48399 NumberOfCodeBlocks, 48399 NumberOfCodeBlocksAsserted, 219 NumberOfCheckSat, 48180 ConstructedInterpolants, 0 QuantifiedInterpolants, 70503400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 219 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3501080 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/MonadicInvariant01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-38-02-313.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/MonadicInvariant01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-38-02-313.csv Completed graceful shutdown